mutant

That which has mutated, with one or more new characteristics from a mutation.

Furthermore, it is possible that there occasionally arises what may be called a mutant of very desirable character from a eugenic point of view.

There does seem to have been some mutation among plants[…]but in animal life where are the mutants? When or where has a new species originated in this way?

Someone or something that seems strange, abnormal, or bizarre.

Your neighbor seems to be a mutant; he’s so cringy!

She could really get to like this relationship with Raven, if it weren't for the fact that he's a homicidal mutant.

Synonym of mutex.

Of, relating to, undergoing (i.e. mutating), or resulting from change or mutation; that has undergone mutation.

mutant DNA

Scientists have created a mutant enzyme that breaks down plastic drinks bottles—by accident.

Strange, abnormal, or bizarre.

Your mutant brother just growled at me again!

Boris Johnson got an angry response after telling school pupils that the exam results crisis was caused by a “mutant algorithm” and he was glad it had been “sorted out”.