Master Mega

Master Mega is a shark which aids Shiver in Return of the Mammalians.

Appearance
Master Mega is a large shark resembling a great white shark with a saddle, rocket boosters on his back, and a pair of 18k Aviators on his head. Shiver will ride on his back until enough damage is dealt. Master Mega has a spawn point on his forehead for when Shiver is splatted. When Master Mega has taken enough damage, his regular eyes will have an X shape, similar to how some cartoon characters have "X" eyes when they die.

Splatoon 3
Shiver and Master Mega are fought as the third boss of the single-player campaign. Later, after Deep Cut have allied with the New Squidbeak Splatoon, Shiver briefly lends Master Mega to Agent 3 to help them boost into space to stop Mr. Grizz.