|Final Smash||Speed Brick|
Mr. Tetromino was a newcomer in the scrapped Super Smash Bros. GO!. He was the 6th newcomer revealed, after Maxwell and before Serena. He is composed of 7 Tetrominoes. It is unknown if he will return for Super Smash Bros. Swap.
- Black and White; based on the Gameboy's colors.
- Shades of Green; also based on the Gameboy's colors.
- Colors are Opposite of Original; Ex. Yellow -> Purple
- American; Red, White and Blue
- Japanese; White and Red
None were decided before the project was scrapped.
- Up: Not decided.
- Down: Not decided.
- Left: Not decided.
- Right: Not decided.
- His blocks fall from the sky and stack up to create him.
- Screen: He hits the screen and falls apart.
- Background: In a similar fashion to Meowser at the end of Super Mario 3D World, he flies into the background and then explodes.
- He drops his left arm and it rises back up to him.
- He hops 3 times.
- He rearranges himself and he vanishes.
- He spins around causing his pieces to fly off. The green piece hits the screen causing a bump.
- He rearranges himself but fails and then gets angry.