extraordinary person; exceptional individual
Internet slang and jocular term. A wordplay on 一般人 (いっぱんじん, 'ordinary person'), using 逸 ('exceptional') instead of 一 ('one'). Used humorously to refer to someone remarkably talented or unusual.
See also: 一般人
That person is an extraordinary individual. I can't believe they're just an ordinary person.
ネットでは、すごい才能を持つ人を「逸般人」と呼ぶことがある。
On the internet, people with amazing talent are sometimes called 'ippanjin' (extraordinary person).