In 1888 a Risso’s dolphin, uncommon in that area, appeared in the strait between New Zealand’s North and South Islands. He was named Pelorus Jack and would guide steamers through the dangerous French Pass. He led ships through the strait for 24 years, each ship taking twenty minutes, without a single shipwreck. He disappeared in 1912.
What do you think of Megatron as a Risso's Dolphin? I mean, I love him as an orca as much as the next dude, but when I remembered the beauty of those scarred-up mothertruckers, I went, "that's him!!"