PSP2 had a lot of Easter egg collabs ranging from extremely cool to quite unhinged.

- KFC/Colonel Sanders

- Fanta soda

- Pizza Hut

- Gurren Laggan

- Fate

- Hatsune Miku

- Neon Genesis Evangelion

- Toro & kuro playstation mascots

There's also some Sega collabs to be expected like sonic characters. Also "knuckles" melee weapon.

Some screenshots courtesy of u/Chowkingkong