tiger of a different stripe

built different

Able to do things which others cannot; extremely talented or unusual.

couldn't be more different

Two entities that have virtually nothing in common.

different breed of cat

Something entirely different; a whole other thing or matter.

different drummer

Someone or something that implies individuality, originality, or nonconformity.

have a tiger by the tail

To be in a difficult or dangerous situation in which one ideally should not remain, but from which one cannot withdraw.

have the tiger by the tail

To be in a difficult or dangerous situation in which one ideally should not remain, but from which one cannot withdraw.

horse of a different color

An unrelated or only incidentally related matter with distinctly different significance.

lady or tiger

A pure gamble with highly divergent outcomes.