Black Brachio Ranger

The original Green and White Mighty Morphin Ranger, Zeo Ranger V - Red, and the first Red Turbo Ranger, Tommy acquired a doctorate in paleontology after his Ranger days, even finding the original three Dino Gems. When Mesogog started attacking Reefside, he found himself the mentor to a new team of Rangers that bonded with the Gems. However, it wasn't for long that Tommy would once again join the battlefield as the Black Ranger with the power of the Brachiosaurus after bonding with the Black Dino Gem. He also gains the power of invisibility when unmorphed.

Example of:
Sixth Ranger