Felix is a very awkward geek who doesn't necessarily know how to function in social settings. He typically doesn't know the right things to say and stumbles over his words in even the most mundane interactions. He'll also often mess things up when pressured, and he's a pretty big pushover. However, he's as loyal as a puppy and his dorkiness is endearing to some.

High-to-moderate pitched voice. The English dub of Midoriya from My Hero Academia is an effective reference for the voice of this character. Felix is a character that is often nervous or intimidated, and even when he isn't, he's awkward and sweaty at almost all times. He is effectively a personification of a fictitious nerd.