different drummer

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.

horse of a different color

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

march to the beat of a different drum

To do things in one's own way regardless of societal norms and conventional expectations.

same, same, but different

Almost the same, but with some differences.

sing a different tune

To hold a different opinion or appreciation (about something); to possess a new, changed, or regenerated mindset, usually for the better.

tiger of a different stripe

Something entirely different; a whole other thing or matter.