Dr. Hax

Dr. Hax is a character from Phineas and Ferb and is a minor antagonist in the first season of The Knights of the Multiverse. He is a member of the evil organization L.O.S.R., and as his name alludes to, he excels at hacking mainframes, as well as general robotics.

Personality
Hax is the general "cool-guy" of L.O.V.E.M.U.F.F.I.N., having a generally laid-back attitude towards most activites and addressing people in an uncaring and uninterested tone, preferring to keep to himself. Even though he isn't very scientific like some of his colleagues, he has a knack with robotic engineering and tricks, given how many gadgets he can pull out of his robotic arm. However, if he either gets agitated (or bored) enough, he will lash out in rage against the closest thing around him.

Pre-Series
Dr. Hax was one of L.O.S.R.'s, or L.O.V.E.M.U.F.F.I.N. at the time, more reaccuring members in large-scale events, including the attempt of creating a new ice age with one of Dr. Heinz Doofenshmirtz -inators. He was also among the members that managed to escape from capture when the OWCA agents were freed by Perry the Platypus.

Season 1
One year after L.O.V.E.M.U.F.F.I.N.'s fall, Hax aided his comrades in breaking out the imprisoned members, including Aloyse von Roddenstein. To get the group back on track, Rodney gave them their new title and proposed that they "borrow" some of Dr. Doofenshmirtz's -Inators and make them actually useful for real evil purposes, rather than using them get rid of something that slightly annoys them, with Hax volunteering to dig through some of his files.

Abilites
A personal attachment that he did himself ('cause he thought it would be cool), Hax has multiple gadgets housed inside of his robotic arm, such as a laser housed in the pointer finger, wires in each of his fingers that allow him to connect to any mainframe, and can fire it at an opponent like a rocket punch.
 * Robotics Engineering
 * Robotic Arm

Other L.O.S.R. Personnel
In terms of his ranking on the L.O.S.R. todem pole, he ranks among the usual assorted members.