I'm fairly sure the name and description of Turbo Wanderlust is based off of Turbo (no spoilers for those who haven't watched it!) from Wreck-It-Ralph, but the individual poses are very likely based off of other games. I saw someone else say that the 3rd background was based of Skyrim or something.
Brash Badlands - Guy from Draglade (DS) + borderlands 2 Image
Butterfly Kick - Chun-Li's Spinning Bird Kick Move + Butterfly from Perfect Tragedy CI Parody Move GIF
Lady Katrinn - Valkyrie's Helm from Ragnarok Online (None of the Valkyries drops this item, it's crafted in a EXPENSIVE quest) Image
Akihabara Nobody - Everyone Gaia Online confuses this item with Sora/Roxas from Kingdom Hearts, but in fact this item is inspired by Neku Sakuraba from The World Ends with You / It's a Wonderful World. This is easily recognizable because the items have names of districts very popular for teens in Tokyo, where the game goes. But the clothes and the word "Nobody" are character of Roxas.
Summarizing: Neku Sakuraba + Roxas (KHII) Wikipedia - Neku Image - Roxas Image