Squirtle (SSBU) - SmashWiki, the Super Smash Bros. wiki

Squirtle is a playable character in Super Smash Bros. Ultimate. It was confirmed on June 12th, 2018. It is part of Pokémon Trainer's rotation along with Ivysaur and Charizard. Along with the Pokémon Trainer, Squirtle is classified as Fighter #33. Michele Knotz, Rikako Aikawa and Klaus
Squirtle is a playable character in Super Smash Bros. Ultimate. It was confirmed on June 12th, 2018. It is part of Pokémon Trainer's rotation along with Ivysaur and Charizard. Along with the Pokémon Trainer, Squirtle is classified as Fighter #33. Michele Knotz, Rikako Aikawa and Klaus

Incineroar (Super Smash Bros.) - Bulbapedia, the community-driven Pokémon encyclopedia

Super Smash Bros. for Nintendo 3DS and Wii U - Wikipedia

Classic Mode - Super Smash Bros. Ultimate Guide - IGN

Fox - Super Mario Wiki, the Mario encyclopedia

Squirtle (SSBB) - SmashWiki, the Super Smash Bros. wiki

List of fighters debuting in Super Smash Bros. Ultimate - Super Mario Wiki, the Mario encyclopedia

Pokémon Trainer (Super Smash Bros.) - Bulbapedia, the community-driven Pokémon encyclopedia

Bowser (Super Smash Bros. Ultimate), Smashpedia

Wii - Super Smash Bros. Brawl - Squirtle Trophy - The Models Resource