|Species|| 3/4 Human
|Age||10 (Ryan 10:Alien Master)|
Ryan Terlinger (Ryan/Ryan 10) is the main hero of Ryan 10: Alien Master. He is a pure blooded human from Earth. He is 10 years old at the beginning of the series.
He is about the average height of 10 year old human, he has brown hair and green eyes. He wears a lime green shirt, with three strips that lead to a circle on the shirt.
He is calm most of the time, except when in battle. He is also very hot headed when he gets worked up. Sometimes it is almost impossible to stop him when someone really angers him, especially with villains.
Being only human he has no special abilites, except when he's in his alien forms in which he has multiple abilities. He very well at hand to hand combat, and at sports.
- He is named after the creators brother, who's name is Ryan.
- His last name is also a pun off of Ten and the last name of the creators brother.
- His personality is also simliar to the creator's brother.
- His favorite color is blue, despite his shirt, and the Alphatrix being green.