Atypical

[Hina Muqadas]

That has no type; devoid of typical character; irregular;
unlike the type.

[Britney]

Not typical; abnormal or [out of the ordinary] in nature. [Irregular] or not conforming. Not a prime example of a species, a behavior, etc. A [deviation], differing from the norm.

[Dave Paprocki]

Not representative of a type, group, or class.