I felt like doing my own take on NASB alts, with the same limitations the devs had
SpongeBob: Kuddly Krab
Patrick: The Patrick Show
Sandy: remains intact
Leonardo: remains intact
Michelangelo: Trenchcoat
April: Remains intact
Lincoln: Nerd outfit
Lucy: Pink dress
Reptar: Intact
Helga: Valkyrie
Invader Zim: Intact, but GIR has a dog disguise
Ren & Stimpy: Fire Dogs
Powdered Toast Man: Intact
Oblina: Human disguise
Nigel: Bagpipe Player
Danny Phantom: Danny Fenton
Aang: Fire Nation Disguise
Toph: Intact
Korra: Earth Kingdom Parka
CatDog: Vacation
Garfield: Vintage "whatever" shirt
Patrick: The Patrick Show
Sandy: remains intact
Leonardo: remains intact
Michelangelo: Trenchcoat
April: Remains intact
Shredder: 2003
Lucy: Pink dress
Reptar: Intact
Helga: Valkyrie
Invader Zim: Intact, but GIR has a dog disguise
Ren & Stimpy: Fire Dogs
Powdered Toast Man: Intact
Oblina: Human disguise
Nigel: Bagpipe Player
Danny Phantom: Danny Fenton
Aang: Fire Nation Disguise
Toph: Intact
Korra: Earth Kingdom Parka
CatDog: Vacation
Garfield: Vintage "whatever" shirt