The blue Corrin represents the I-Tetrimino, an "I"-shaped Tetris piece with a blue color scheme.
The stage is a 1 by 4 grid, resembling 4 I-Tetriminos stacked atop one another.
The stage's background features poles, which can also be seen with the Color TV-Game 15 Assist Trophy, referencing the barriers of the Tetris playfield.
Corrin's favored down air attack features a stall-then-fall, similar to how Tetris blocks fall from the top of the screen.
Corrin's favored down air attacks and the Deoxys Poké Ball Pokémon's Hyper Beam references the vertical shape and blue color scheme of the I-Tetrimino.
