PS All-Stars Battle Royale roster leaked?

A number of user-posted files have appeared on both NeoGAF and GameFAQs claiming to have uncovered screenshots of unannounced levels and characters from Sony's upcoming four-player brawler PlayStation All-Stars Battle Royale, supposedly obtained from a private beta of the game.

The data files and screenshots show what is supposed to be a previously unveiled list of characters, stages, minions, items, and game modes.

To date, the game's confirmed roster includes God of War's Kratos, Parappa the Rappa, Sly Cooper, Killzone's Colonel Radec, Twisted Metal's Sweet Tooth, the Fat Princess, Uncharted's Nathan Drake, and BioShock's Big Daddy.

According to the supposed leak, the game will also include Dante from Devil May Cry, Spike from Ape Escape, Raiden from Metal Gear Solid, and Nariko from Heavenly Sword, as well as a BioShock Infinite stage and a Twisted Metal stage.

Neither the screenshots nor the data files have been confirmed as real. When asked for comment, Sony told GameSpot: "This story is based on rumour and speculation, which is not something we comment on."

All-Stars Battle Royale will feature a number of single-player and multiplayer game modes, as well as cross-platform online play, complete with tournaments. The full list of supposed leaks from the game is below:

Characters:
Dante (DMC)
Evil Cole (InFamous)
Nariko (Heavenly Sword)
Raiden (Metal Gear Solid)
Sackboy (LittleBigPlanet)
Ratchet & Clank (Ratchet & Clank)
Sir Daniel Fortesque (MediEvil)
Spike (Ape Escape)

Items:
Atomizer (Resistance 3)
Baumusu Axe (The Mark of Kri)
Boots of Hermes (God of War III)
Freeze Missile (Twisted Metal)
Golf Club (Hot Shots Golf)
Gravity Shield (Wipeout)
Hedgehog Grenade (Resistance)
Dohvat Laser Designator (Killzone 3)
Leech Beem (Wipeout)
Murder of Crows (BioShock Infinite)
Railgun (Metal Gear Solid 4)
Razor Claws (Ratchet and Clank)
RPG (Uncharted)
Scythe (Fat Princess)
Spear (God of War)
Sonic Rift (ModNation Racers)
Sackbot (Little Big Planet)

Minions:
Captain Qwark (Ratchet & Clank)
Kai (Heavenly Sword)
Kat (Devil May Cry)
Kiya (MediEvil)
Monkey (Ape Escape)
Nix (InFamous 2)
Pierre (Doko Demo Issho)
Sackbot (LittleBigPlanet)
Sam (Metal Gear Rising)

Stages:
Alden’s Tower (InFamous)
Black Rock Stadium (Twisted Metal)
Columbia (BioShock Infinite)
Franzea (LocoRoco)
Invasion (Killzone)
Paris (Sly Cooper)
San Francisco (Resistance)
Stowaways (Uncharted)
Time Station (Ape Escape)