At the 2011 Comic-Con International: San Diego the news out of Warner Bros. Interactive Entertainment and NetherRealm Studios about who was going to be the final DLC character for their largely successful reboot of the Mortal Kombat franchise caught the gaming world completely by surprise. Instead of another refresh of a fighter from the franchise's deep roster, or another game like the PS3 exclusive Kratos, the last new character will be Freddy Krueger, the scar-faced, claw-gloved antagonist from the Nightmare on Elm Street film series. Freddy, upgraded with a second glove, a custom move-set and a couple of trademark fatalities (that tragically can't hope to match his creativity in upping his filmatic body count) will be mixing it up with Liu Kang, Raiden and the rest starting on the ninth of August, but as bizarre as it may sound for this classic movie villain to make the jump to a 2D fighting game, he is just the latest in a line of out-of-continuity guest stars to enter the ring.
Source: Halo Franchise
Game: Dead or Alive 4 (2005)
Though the developers of Dead or Alive 4 wanted to use the Master Chief in their game, an admirable respect for cross-universe continuity lead to the creation of a new character, Nicole-458, another one of the UNSC's Spartans fighting the war with the Covenant five hundred years into the future. A 'warp-bubble' accident strands Nicole-458 on Earth in the 21st century, where she fights only to protect herself and the timeline from contamination from the future-tech under her protection. Subverting the Dead or Alive fighting franchise's proclivity for curvy female fighters, Nicole-458 does battle in her armor and uses unique items from the Halo franchise like active camouflage and plasma grenades in her fights.
Source: Sonic The Hedgehog (1991)
Game: Super Smash Bros. Brawl (2008)
The pitting of rival heroes against each other in a classic thought experiment throughout fandoms of all types of media, including video games. Sonic, the mascot of SEGA verses Mario of Nintendo is a prime example and ever since the Smash Bros. franchise was announced, speculation of Sonic's possible inclusion was rampant. In 2008, through a combination of fan desire and SEGA's transition away from console hardware development, Sonic made his appearance as an unlockable character in Super Smash Bros. Brawl, bringing with him his trademark speed, attacks and finger waving attitude.
Source: The Legend of Zelda (1986)
Game: Soulcalibur II (GameCube, 2003)
In the decade recently past, the Soulcalibur franchise had a hammerlock on the concept of guest fighters, using it not only as a creative exercise but a keen marketing strategy. Only in the GameCube release of Soulcalibur II could you play as “a” Link, keeping with the source franchise's tradition of creating 'new' iterations of the seminal action-adventure hero for almost all of the The Legend of Zelda titles, who is on a mission from Hyrule to destroy the Soul Edge sword that was the cause of a calamity on his world. Beside bearing the Master Sword as his primary weapon, Link brings with him his bow, boomerang and bombs
Source: Spawn #1, 1992
Game: Soulcalibur II (Xbox, 2003)
Exclusive to the Xbox version of Soulcalibur II is comic book anti-hero Spawn from the eponymous comic book series created by Todd McFarlane. Depicted his original incarnation as the reanimated body of Al Simmons, a betrayed and murdered US Special Forces soldier who accepts a Faustian bargain to see his wife again but is subsequently enthralled to do the bidding of a demon named Malebolgia. Empowered by 'necroplasm' and a symbiotic costume that he can shift to create weapons, in Soulcalibur II Spawn is sent by Malebolgia to capture the Soul Edge sword for his own dark purposes, but just like in his own comic, Spawn is tormented by his own dark side and struggles to do the right thing.
Source: Star Wars (1977)
Game: Soulcalibur IV (2008)
Initially exclusive to the PS3 version of the game, the Dark Lord of the Sith discovers a rift in space-time that lets him travel from a long time ago and far, far away to do battle over the cursed swords at the center of the Soulcalibur franchise. Vader's imposing figure and red lightsaber grant him physically damaging, short range attacks. To adapt to his command of the Force, the game implements a special 'Force Meter' that is drained when used to Force Choke or throw his lightsaber, and although it recharges quickly, draining it fully will leave him stunned for a brief period.
Source: The Empire Strikes Back (1980)
Game: Soulcalibur IV (2008)
The Star Wars saga continues in Soulcalibur IV with the briefly Xbox 360 exclusive guest character Jedi Master Yoda. The diminutive Jedi Master 'competes' in the fighting tournament to dispel the evil residing in the cursed blades of the Soulcalibur series. In game, and akin to his acrobatic fighting style displayed in Attack of the Clones, Yoda uses his force powers to enhance his agility, using speed to compensate for this lack of size, reenforcing his classic teaching that 'size matters not.'
Source: Star Wars: The Force Unleashed (2008)
Game: Soulcalibur IV (2008)
Vader's Secret Apprentice, aka Starkiller, aka Galen Marek was the only Star Wars character initially available to both platforms for Soulcalibur IV as an overt bit of cross-promotion for his 'own' game, Star Wars: The Force Unleashed. As a character, The Apprentice is bristling with Force power, is a ruthless killer, but is divided emotionally over the tasks he set to perform and loyalty to his deceptive master. In Soulcalibur IV he fights at the behest of Vader and plays as a balance between his master as Yoda.
Source: Daytona USA (1993)
Game: Fighters Megamix (Sega Saturn 1996)
Standing up on its back bumper and rear tires, Car #41 (aka Hornet) from the arcade title Daytona USA boxes humans with its wheels in this crossover fighting title that also included characters from the Virtua Fighter, Fighting Vipers and Virtua Cop series. Though bizarre in appearance Hornet is expertly mapped onto a person-sized polygonal fighting form and has its own array of punches and kicks, all set to the sounds it's engine revving.Got a comment? There's lots of conversation on Newsarama's FACEBOOK and TWITTER!