Gigas Terano (寺野先生, Terano Gigasu) is one of the supporting characters of the Murenase! Seton Gakuen series.
Terano-sensei has the appearance of a large red Tyrannosaurus rex. He wears a suit: a white shirt, tie and pants. Teran-sensei has 3 three fingers like other theropods (in real life Tyrannosauruses has 2 fingers).
Terano-sensei has the tendency to scare the students by threatening to eat them, but as that scares the students, they always listen to him.
Terano-sensei went at the Seton Academy's entrance ceremony and quickly brought order and lined up the students. Later, he was called by Hitomi Hino, as three bears attacked her, Jin Mazama and Ranka Ookami. As Terano-sensei came, he bit one of the bears and threatened to make them extinct and proceed chasing them.