Deku

An insulting nickname given to Midoriya Izuku (of My Hero Academia Anime) from Bakugou Katsuki (of My Hero Academia Anime) during their childhood.

A ‘Deku’ is a Japanese wooden puppet/Doll, but it is also used as an insult (it can mean Blockhead, Useless, and/or Dummy). The insult refers to the dolls, which are traditionally made without limbs.

“My favorite character from My Hero Academia is Deku!”
“You’re such a deku.”