eccentric

adjective

not having a common center

nonconcentric
conspicuously or grossly unconventional or unusual

bizarrefreakishfreakyflakyflakeygonzooff-the-walloutlandishoutre

noun

a person with particular interests and/or mannerisms
“Doc from the movie Back to the Future is an eccentric.”
case
a person with an unusual or odd personality

flakeeccentric personoddballgeek