The Ultimate Showdown of Ultimate Destiny

"The Ultimate Showdown of Ultimate Destiny", often shortened to "The Ultimate Showdown", is a comical song and video released on December 22, 2005. The song was written and performed by Neil Cicierega under the pseudonym "Lemon Demon", with art and Flash animation by Shawn Vulliez.
"The Ultimate Showdown" is a massive, citywide battle set in Tokyo started by Godzilla and Batman ultimately involving dozens of pop-culture icons, fictional and otherwise, ending with Mr. Rogers emerging victorious and then committing "seppuku". It gained a large cult following among web enthusiasts and became the "User's Choice" on December 28, 2005 on Newgrounds, where it has been viewed over 13.1 million times. It appeared on several other websites including Albino Blacksheep, YouTube, Flashportal, Transbuddha, and Weebl's Stuff. In 2006 it was included on Lemon Demon's fifth album "Dinosaurchestra". , it had over 25 million views on YouTube.
The song topped the "Funny Five" on "The Dr. Demento Show" for several weeks and was the #1 Request for 2006. The video has since been parodied and referenced repeatedly in other flash videos. A new version of the song was later recorded specifically for the Rock Band Network and was released for the service on July 6, 2010 under the title "The Ultimate Showdown (RBN Mix)". In 2009, the song was rerecorded with a full band, and this track was included in Lemon Demon's 2011 EP "Live (Only Not)".
In early January 2021, the original music video on YouTube was taken down by Shawn Vulliez, the original animator of the short. He would go on to reupload the music video to his own channel, where he discussed his decision in the comment section of an unlisted video with other users.
Characters.
The song mentions a long list of characters, both real and fictional. They are shown in the following order:
Characters not mentioned in the song but depicted in the video include Robin; Dudley Do-Right; Snidely Whiplash; Samuel L. Jackson being attacked by snakes; Mario fighting Sonic the Hedgehog; Eric Bauman, creator of eBaum's World, being punched in the face by Lowtax; Santa Claus being run over by the DeLorean time machine; Goku; R2-D2 and C-3PO being taken apart by a Jawa; Tobias Fünke; Han Solo encased in carbonite; and McGruff the Crime Dog is mentioned in the song, but not depicted in the video.