This is the first mini animated bit/mini episode of Luny & Milky's Epic fight continuation: Epic Fight Mini Ep #1 Frank Patrickuny Starr vs Sponge Bluffy Micky [SPONGE BOB x ONE PIECE]
This is Luny cosplaying as Patrick Star(from Sponge Bob) fused with Franky (from One Piece), and Milky cosplaying as Sponge Bob (from... err... Sponge Bob obviously..) fused with Monkey D. Luffy (from One Piece) :)
It's short, but full of action, and it might get you interested to what might happen in the next one :'j