Alright, let's make some guesses towards the next costumes then.
Sweet Tooth: Twisted Metal 4? Small Brawl?
Radec: Helghast Marksman. Has to be. Could also be a generic Helghast?
Cole: Only one I can think of is Concept Cole. With the hair. They could also pull a Delsin Rowe.
Evil Cole: Same two as above, with the potential of a Vampire Cole as well.
Ratchet: Deadlocked? Q-Force Armor? Hyperflux?
Jak: Jak 2? The Last Frontier?
Big Daddy: Rumbler? Delta? Lancer? Perhaps something from Infinite?
Dante: Classic? Neo? Vergil?
Heihachi: Tekken 3? Tekken Tag 2 Alt? SFxT Alt?
Nariko: Probably one of her concept arts. Or something entirely new.
Raiden: MGS4? Poncho? Suit?
Sir Dan: Pimp Outfit? Colonel Fortesque?
Spike: Jimmy? Monkey? Kei? Jake? Something new?
Toro: Who knows? He has tons of options.
Fresh to death
Wetsuit Drake (from the start of Uncharted 1)
God of War Ascension Kratos (what appears to be a generic character from God of War Ascension)
Logan Graves Emmett (Graves' brother Logan))
Catsuit Kat (I don't know, but it's in Gravity Rush)
Ninja Fat Princess (based on the DLC with the ninjas in Fat Princess)
Wrestler Sackboy (probably a costume in LittleBigPlanet)
Jailbird Sly (a costume in Sly 4)
Tux Parappa (parappa anime)
Kratos is Apollo, not a generic Ascension guy
It's one of hhis costumes from God Of War III
I wonder... If the Kat and Emmett costumes are already in the game, do you think the other costumes are too? They might just be harder to find because they're under Costume 4 and not costume 3 like every other character has already
I'd say the patch we got that added characters and stage also added these as it was a big patch.
I really hope this isn't the DLC announcement in March that is supposed to happen. I'd want characters not pointless things that do nothing but look cool. I'll still buy them whatever the case.