The Mad Hatter, real name Jervis Tetch is a B-list batman villain originally made in 1948 as a throw away villain for Batman #49, mainly known for his obsession with the works of Lewis Caroll (mainly Alice in Wonderland) and his mind control abilities, via cards he tends to have in most of his interpretations.
he shows up in many pieces of batman media, though his most well known apperances are probably:
(and also probably Gotham but we don't talk about that jerv)

hes such a little weirdo i just cannot NOT love him y'know? lil freak man ♡♡♡
my strange and slightly unnerving man!!!! (ignore the panels where hes naked he just does that sometimes)
he reminds me of this meme lol
if it wasn't for btas hatter, chances are many of the hatters we have today wouldn't exist at ALL! plus, he was the one that started obssesion...
i LOVE how awkward he is pre-villainy, and i adore how unhinged he is when he first puts on the hatter costume, he was genuinely going MAD!! (hehe)
well, firstly i think hes hot lol
and secondly, i see alot of myself in jervis...
much like him, i'm also a weirdo who is NOT normal about the things i love, i'm also a pretty lonely person who has trouble connecting with people and making friends, and i also tend to use escapism as a coping mechanism for my loneliness (probably alot more than i should!)
alot of the feelings he has are ones i also have, and that makes me really relate to him on a personal level...
this boy can't stop HOPPIN!!! o-0
kinda reminds me of something i read while looking at the comments for another mad hatter fans version of him that said "I love it when jervis looks like a rabbit who made a wish to be human" and honestly thinking about it now i totally agree!! Rabbit jervis for the win!!
he has a daughter :)
oh before you go...