Most punch-able for me is divided into two categories, Crew-member and everyone else.
Most punch-able crew-member.......Liam.
He is an Idiot, his character doesn't match his backstory, and you can't reign him in AT ALL. The choices of what to do, info to give out, and setting Ryder up all scream IDIOT. He was supposedly in a crisis response team....this means you have to be stone cold when the poo is hitting the fan, you can't make stupid choices, you can't act like a child and you can't let your temper EVER get away from you, and Liam is NONE of these things. Last is you can't reign him in....you are the leader, yet you can't ever tell him NO, you can't stop him from setting you up, you can't punish him for doing so, you can't monitor his communication or have SAM do it to make sure he isn't doing dumb stuff, nope you just have to go along and say OK, sure, .....yeah, punch to the face what puts him in the med-bay for the rest of the series for me.
Most punch-able for everyone else.......Addison...
First off, that face, second off she is responsible for more poo going done in Andromeda that just about any other one person except for the Archon. She allows Spender(who fractures relations with krogan, funds a mercenary band and plays all sides to his benefit), she allows the three Sabres, and she allows the woman baby making scientist. Heck, worse than allowing she is directly RESPONSIBLE for them and the freaking coverup in most cases, causing unknown number of deaths and all it gets is opps sorry, I was trying to do good, win some lose some....blech, superman punch to the face that sends her flying through the command center monitors and tumbling into space.....