The original Felix had an IQ of 143, but the recreated Felix only has an iq of 98, due to the fact in the previous timeline, felixes old counterpart had made his copies too smart, and they ended up taking over the north american continent.
Felix has aspergers, and he's horrible with social cues despite his incredible pattern recognition. The aspergers are also part of the reason for his severe anger issues.
Felix is an introvert, and much prefers working on his own, but also hates the idea of nobody liking him.
Felix was a really happy child, and was often fascinated with science, but the more he grew and had to torture his father's experiments if they stepped out of line, the darker he became, eventually constantly being negative, egotistical and in denial.
Felix will never harm a child if the child provokes him, but if the child is overly nice and sappy, he has a hatred for it, and believes it's been treated 'too kindly'.
Felix is a natural blonde, but dyed his hair brown when he ran away to both avoid his father's detection, considering his father had cameras almost everywhere, and to remind himself internally that he will never be like the rest of his family.
Here's a happy fact tho, Felix loves digging holes because he thinks it 'makes me look like a pirate, girls love pirates' in his words.
