Mandomantal

The Mandomantaru (マンドマンタル) appears to be a one of a kind Reaverbot. This is one of the few peaceful Reaverbots that will not attack. It can be found in the deepest part of the Nino Ruins.The Mandomantaru can still hurt megaman if he is in it's path. It is often referred to as the Trilobyte or Manta Reaverbot.

It's use in the game is to ride on it, mentioned by it's flat body. Riding on it allows one to get to the chests on the high pillars in the area, normally unreachable even underwater. It, unfortunately, either disappears or is destroyed once the water is drained, as it apparently cannot survive out of water, much like a real fish.