Teran is a Clancer, small in stature but a powerful ally and loyal friend. He is Celes' brother, and is protective of her above all else. In the end, it is revealed that he is not Celes' biological brother and not even from the same planet, and was hired by King Aster to protect her. He is rather sad about this, and runs away. Celes finds him, and says she does not care if it his not her biological brother, and still loves him.
Teran has also claims to Marina that he has "Blockman blood" in him, a creature composed of various Clancer blocks (spike balls for hands, cirucar block for a head, and square blocks). He helps Marina on one mission by turning himself into Blockman. He becomes a playable character (not being Blockman) in the story when Marina is fatally wounded by Leo, and needs to be healed but must find the healing machine.
He wears a yellow hat with a red letter "N," which stands for Nendoro, the Japanese term for Clancer.
As a playable character, Teran is revealed to have several clancer techniques, including the jab, fire uppercut kick, and triple jump.
List is incomplete
- Rescue! Act 1 and Rescue! Act 2 - The character you play as, attempting to revive Marina with a certain machine.
- Blockman Rises - Teran transforms into a "Clanball" which transforms into as mentioned above, a creature composed of various Clancer blocks (spike balls for hands, cirucar block for a head, and square blocks).
- Crisis: Nepton - A fighting ally that occupies Marina.
- Meet Marina! - One of the Characters you have the option of speaking to in the game.