Remote Robot

The Remote Robot is a robot used by Tails in Tails Adventure. It appears to look like a dog that can fly, and when it goes underwater, it turns into the Sea Fox, Tails' submarine.

Archie Comics
The Remote Robot also appeared in Sonic Universe's Arc #5, "The Tails Adventure," but was known as T-Pup in this arc. He had more of a dog look and was refered to as a pet project. When he flew, he looked much like he did in the video game. He also could hold data, shoot light from his eyes, and even drop bombs from his mouth.