Tanaka

Dr. Tanaka is a Japanese marine biologist. He and his colleague Dr. Hamakura investigate underwater lifeforms in their unique submarine. In the story? Professor Shonku o Raktamatsya Rahasya they were joined by Professor Shonku, Abinashbabu and Newton in their quest to investigate mysterious red fishes in seas all over the world.

Dr. Tanaka hardly speaks any English, so Prof. Shonku used his Linguagraph machine to communicate with him.