Rodimus was seen in the season 3 "Transwarped" special, leading his team in defending a Space Bridge from Strika's "Team Chaar". His team was overwhelmed, and Rodimus is infected with Cosmic Rust, courtesy of Oil Slick, putting him out of commission. According to Derrick J. Wyatt, Rodimus is back on Cybertron de-rusting. He can later be seen on Cybertron cheering for Optimus Prime and his crew for defeating the Decepticons in "Endgame, Part II".
In Transformers: Decepticons, Optimus Prime lands on Earth along with the other Autobots to stop the Decepticons. Optimus does not appear until Megatron is released and Starscream escapes with the Allspark. Optimus fights Megatron, but is defeated and is killed while Megatron gives chase to his traitorous second-in-command. In the 2009 Revenge of the Fallen video game by Activision, Optimus Prime is among the playable characters.[20]
In the United States, Canada, and Hasbro's Asian markets, Masterpiece Movie Series Optimus Prime was exclusively available from Toys"R"Us, whereas in Spain, he saw a wider release, being at least available via the Spanish subsidiaries of Amazon and Carrefour. It's currently unknown if he was also available in stores, or limited to online purchases. In Greece, he was officially available via at least one toy store chain, aptly named simply "Toys-Shop", but again might have been available online only.
A nice article but I see a few flaws. First of all if the distribution of LEGO sizes/prices is increasingly skewed it is better to either split the sample or look at medians or rolling medians than averages. Secondly, this is a perfect case to run a regression panel regression with time dummies to see both the impact of time and the impact of size on the prices.

Hasbro's original plan for the Beast Wars was to have Optimus Prime, renamed Optimus Primal, and Megatron be reformatted versions of their 1980s selves. This was shown in the toys's Tech Specs, and in the comic packaged with the basic Optimus Primal/Megatron two-pack. Hasbro also wanted the "Mutant Heads" found on all of the deluxe sized first year toys as battle helmets, but Mainframe scrapped the idea as it would have required three animation models for each character instead of two. Another designed feature for the 1995/1996 toys was carried over from Generation 2, transparent "light pipe" eyes. However, most toys had those parts cast in opaque plastic.
Optimus Prime is armed with two large rifles formed out of a combination of both smokestacks and fuel tanks. These rifles peg onto his lower arms with grips for his open hands. The under-slung fuel tanks can fire spring-loaded projectiles. In vehicle mode, both smokestack rifles can be deployed as twin cannons, and this mechanism can also be used to store the rifles and deploy them as shoulder guns in robot mode.

The first Generation 2 Optimus Prime toy was largely identical in sculpt to the original release. However, his trailer was cast in black plastic, with the original blue and silver striped sticker replaced with a red and silver one that had "Optimus" in large block letters on it. The trailer also featured a soundbox attachment with a sculpted Autobot symbol on the front. The soundbox could activate a truck engine noise, a laser gun sound effect and a (badly) garbled voice that said "I am Optimus Prime!". This soundbox could also be attached onto Optimus Prime's back and be used as a sort of backpack.
In 2002, 3H secured the official Transformers convention license as well as licenses to produce comic books and start a fan club. Optimus Prime appeared in Transformers Collectors Club comics, a comic released by 3H enterprises. In the comic, he is the same Optimus Prime from the Robots in Disguise continuity, but is taken to the Transformers: Universe reality.
In the Escalation miniseries, Megatron engages Prime and, boosted by Ore-13, overcomes him. Believing their leader dead, the rest of the Autobots attempt to buy the newly arrived Hot Rod time to collect the clone. Prime, who had transferred his consciousness to a backup memory in his trailer command post, advised them to exploit Ore-13's weakness and assault Megatron all-out, catalyzing the Decepticon leader's Energon supply and crippling him.

Calibur Optimus Prime is a retool of the Armor Knight Optimus Prime figure, who is a retool of the original Age of Extinction Leader Class figure, with the fifth wheel hitch now forming his handheld shield based on the one used in Dark of the Moon, which results in a backpack-less robot mode. He also comes with an axe based on the one used in the third film.
This Japanese-exclusive reissue of the original Generation 1 Optimus Prime figure featured tinted blue windows, like those sported by the "Goodbye Convoy" edition of the toy, as well as show-accurate blue eyes. Prime came with all his original accessories, including both versions of his rifle, as well as a new die-cast metal Matrix of Leadership accessory, which could be looped around his neck on a removable chain. Additionally, the set included a show-accurate redeco of the Action Master Optimus Prime figure, a sheet of Autobot insignia stickers of varying sizes, and a mouse pad decorated with the Autobot symbol.
Tim Bailey, Sara Blackburn, Stephen Clark, Jeffrey Cohen, Adam Dimuzio, Mathias DeRider, Tom Fassbender, Luke Forney, Logan Giannini, Travis Hanson, Sean Hallenbeck, Michael Harrison, Kim Haynes, Whit Honea, Greg Howley, Michael J., Angela Leach, Michael LeSauvage, Jim MacQuarrie, Eric Parrish, Michael Pistiolas, Ricardo Rebelo, Drew Rich, Mitchell Roush, Mariana Ruiz, Tony Sims, Randy Slavey, Erik Stanfill, Andrew Terranova, Gerry Tolbert, Mark Vorenkamp, Chris Wickersham

There have also been a number of spin-offs based on the toys including a comic book series, an animated television series, and a feature-length animated movie. The original series program was followed by a number of spin-offs with varying levels of popularity. A live-action film series directed by Michael Bay has produced five films, with more planned.
The TakaraTomy "Autobot Alliance" release of this toy has some significant differences, including casting the red plastic in a darker shade, making his shin and wheel joints grey rather than Hasbro's bronze, painting the Matrix of Leadership silver, and swapping out the dual energon swords for battle hooks, similar to 2010's Leader class Optimus Prime. However, due to the Japanese release retaining the Hasbro packaging, the box still advertises the dual energon swords rather than the hooks. He retains the masked face used for the Hasbro release.
The Universe incarnation of Generation One Optimus Prime is a redeco of the Robots in Disguise Scourge's Spychanger toy, a smaller, simplified version of the original mold. He replaces most of the black plastic with predominantly red and blue, with silver for detailing, with an overall deco making him resemble the original Optimus Prime. Like most Spychangers, he features high speed axles and can roll very well across smooth surfaces, but lacks the weight to propel him quickly.
Mega Optimus Prime is a new larger-sized mold with the similar transformation scheme from the 3-Step Changer toy. It transforms from truck to robot in just 3 easy steps! His deco is based on his appearance in the season finale "Battlegrounds". He also obtains additional articulation on the arms, and sports connector ports for any Robots in Disguise (2015) Mini-Con figures.
When reports from both Jetfire and Mirage corroborated that the Decepticons were constructing giant rockets to shift Earth out of its orbit, Optimus took to the skies and led his troops on a sabotage mission. Upon their approach, Optimus, Jetfire, and Deftwing overheard Megatron declare that the engines would fire up in twenty minutes. With little time to prevent the destruction of Earth's biosphere, the more maneuverable air-bound Autobots entered the thruster tubes to destroy the rockets from within. Jetfire and Deftwing were successful in their task, and the Autobots beat a hasty retreat to avoid the resulting lava swell. Optimus heaped praise upon the pair afterwards, embarrassing the bashful Jetfire. Moving Day Planet Earth

Although he was weak and low on energon, Prime made a last-ditch effort to save the day when he rammed through the wall of Megatron's energon-producing lab. G.I. Joe vs. the Transformers #5 After a quick recharge, Optimus single-handedly smashed the Decepticons, pounded Megatron to the ground, and ripped his fusion cannon off his arm. Prime then teamed up with the Joes and used Megatron's cannon to shoot down the SPS Satellite that had gone rogue and was destroying the island.
In Titan Magazines' UK Transformers magazine, a comic strip on Optimus Prime, written by Simon Furman, would reveal where he was during the events of Movie Prequel #1. As he carries out his fateful plan to send the Allspark into space, the Autobot base is attacked by one of Megatron's drones with specific orders to kill him. As it locates the Allspark, Prime does the only thing he could think of to prevent it from transmitting its location to Megatron. He transforms into protoform mode and physically rams through it. Recovering in time to see the Allspark blast off, Prime is granted a vision of their war on Earth.
Takara's release of Optimus Prime the following year made a few changes, noticeably replacing the gold paint and plastic of the Hasbro toy with bright yellow and much brighter gold. The deco has been tweaked to be a bit closer to the original prototype glimpsed in early catalogs, with yellow added back to cab Prime's feet and the cab grill painted silver, and the Super Mode's waist getting much more paint. This version of the figure was never burdened with the mobility-inhibiting shoulder tabs. Completing the Super Mode combination triggered a new clip of Prime shouting "Convoy, ready for battle!" in Japanese instead of generic mechanical sounds. Late in the run, JUSCO stores offered this toy with blind-packed "Space Galaxy" versions of the individual Destruction Mini-Con Team members, one toy per box.
"Optimus Prime Figure" (オプティマスプライム・フィギア)[1] is a redeco of 2001 Robots in Disguise Spychanger Scourge, painted to resemble Movie Optimus Prime. Of note is the tampographed detailing on his chest resembling Movie Prime's distinctive chest design. Like most Spychangers, he features high speed axles and can roll very well across smooth surfaces, but lacks the weight to propel him quickly.
Generation 2 Optimus Prime comes with all his original accessories, as well as two major new play features. To increase his arsenal, he is armed with a pair of black missile launchers that fit in his fists and fire red spring-loaded missiles; these launchers were retooled from the G.I. Joe figure Barricade. Secondly, he comes with an electronic "sound and lights module" that can either plug into the front of the trailer (where it resembles the air conditioners used on refrigerated trailers), or hook onto Optimus's back in robot mode (via a new slot sculpted into the cab robot). Unfortunately, the soundbox is heavy enough that doing so can easily overpower Prime's hip joints, causing him to topple backward. The soundbox features a large, vacuum metalized Autobot symbol on its front, and three grey buttons which trigger two flashing red LEDs on either side of the module, and a trio of sound effects: a truck engine noise, a laser gun sound effect and a garbled voice that said "I am Optimus Prime!". The module also features ports on either side into which the missile launchers can peg.
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