Theo

is a priest in the Druids sacred land Istar, serving as protector of the heads of the Druids.

Appearance
Theo is a large hulking young man wearing loose pants and few articles of clothes in his upper right body. He has no eyebrows.

Personality
Despite his intimidating appearance, Theo appears to be cheerful and happy as he greeted Meliodas in a friendly way and uses his large appearance to make sure that 'meanies' will take him and his fellow guardians' seriously.