Trixie is sassy, vivacious, and somewhat of a tomboyish character. She is supportive of her friends Jake and Spud, but for a while she has shown a dislike and distrust towards Rose and was a bit un supportive of Jake's relationship with her. But soon, she started to accept Jake's affections for her. She even comforted Jake when the two of them broke up in "Love Cruise". After Rose nearly sacrificed herself to save Jake and every magical creature in the world, she tries to help Jake to move on.
She is also a trustworthy friend because even though Jake's Grandfather doesn't trust her and Spud she keeps Jake's American Dragon secret between her and her friends.