Probably the most famous species of dolphins, making appearances in movies and shows as well as finding purpose in the navy.

Geographic range:
Pacific/Atlantic/Indian ocean in temperate, subtropical, and tropical climate zone

Character info:
This is Arleigh who is a big jerk, simply said. That sort of guys who would haze recruits for his own amusement.

Thus he often ends up assigned with guys significantly larger than him as to not get pushed around by him.