Tony
Tony's usually the one to start it. (Obviously), and when you get into a prank war with him, he will not give up. At first it's fun, but then it just gets to be too much. so usually you're the one to end it with him before things get too out of hand.

Steve
Steve isn't the pranking type. Every once in a while, you'll try and pull something on him just for fun. Sometimes, he'll join in and get you back. But most times he'll just let you prank him and not do anything about it.

Clint
You and Clint are constantly at each other. Wether it's the little pranks like trying to scare each other, or sneaking up and dumping water or whatever on each other. Sometimes, him and Tony will team up against you, and drag the whole team into their prank wars.

Peter
Sometimes Peter just likes to mess with you for fun, as you do him. Peter doesn't put on a whole big show like Tony and Clint, though. he just does little things here and there, like throwing random things at you, or scaring you by doing stuff like falling from the ceiling just for a reaction.

Thor
If you get into a prank war with Thor, you are going to regret it. He will use EVERYTHING he can against you, and usually they end pretty quick. Sometimes he doesn't know that you are just joking when you mess with him, and may almost literally kill you.

Loki
You always loose at prank wars with Loki. His revenge is more discrete, but he knows what he's doing. After all, he is the god of mischief.