SSB2 SpongeBob
This version of SpongeBob comes from the fangame Super SpongeBob 2 which is also made by the same creator. Some of his attacks directly come from said game.
His animation style is unique as it’s styled after the limiting 8-bit style with some smoothness per frame.
SpongeBob is a generalist character with the ability to play aggressively and defensively. He has good up close combo moves but also some helpful disjoint attacks to help with matchups.
Read more about him here: https://fraytools.fandom.com/wiki/SSB2_SpongeBob