UNUSUAL
like nothing on earth
very unusual; otherworldly.The new car models look like nothing on earth this year.This cake is so good! It's like nothing on earth!
odd man out
an unusual or atypical person or thing.I'm odd man out because I'm not wearing a tie.You had better learn to work a computer unless you want to be odd man out.
off-the-wall
odd; silly; unusual. (Slang.)Why are you so off-the-wall today?This book is strange. It's really off-the-wall.
out of character
unlike one's usual behavior.Ann's remark was quite out of character.It was out of character for Ann to act so stubborn.
out of the ordinary
unusual.It was a good meal, but not out of the ordinary.Your report was nicely done, but nothing out of the ordinary.
something about someone or something
something strange or curious about someone or something.There is something about Jane. I just can't figure her out.I love Mexican food. There's just something about it.