CAS !!

victor fries is known for his loving attachment to his wife, nora. everything that he does is for her. but why if he has a PhD, or maybe even multiple, and went by dr. fries before his incident, why isn't his villian name also dr. freeze? well, there may be many reasons for this. I have culminated a few reasons on why this chilly rogue may prefer being a "mister" over a "doctor"

the first reason being his connection to his wife. when referring to heterosexual couples, society usually will refer to them by "mr. and mrs." followed by their shared last name, typically the husband's, like the frieses. this is prominent for freeze's character and can be seen in, an unfortunate comic run, detective comics #1011-#1016. in which by awakening nora with a special substance created by lex luthor and sent specifically to victor, she wakes to become "mrs. freeze". they become a villian duo but that doesn't last very long. definitely a comic arc that is low on my mr freeze tier list.

the second reason having something to do with his morality. victor fries was the man who earned the "doctor status" but since freeze believes the man he used to be before the incident is dead, he may not see himself as a scientist anymore. his morality may be a reason why he prefers being called "mister". I think that if he was annoyed with the public calling him "mr freeze", he would've just asked to be called something else, he used to be called "mr zero".

or a secret third option being maybe he just got his license revoked after he murdered a bunch a people and was pronounced dead for more than a year. I can't help but think of medic tf2.