air out

to let something go, let something loose, to finally relieve something

I had to air out my heart

Hawkeye

Someone who is extremely accurate and precise in a specific task generally something that takes a lot of skill

Man he's a Hawkeye in shooting

Monster

Someone who is generally very strong and scary with an intimidating aura, and features and seen generally someone who you wouldn't interact with

Man! that guy's a monster, he's huge.