Bastion
As Bastion your the bot with the plot to... shoot. Heal yourself or turn into a minigun. Become a tank and kill everybody. Go ahead and go crazy and get play of the game for doing ABSOLUTELY NOTHING!!!
Hanzo
Pick this if you want your teammates to hate you. Use a bow and arrow and that's it. Have fun with your entire team being mad at you for picking Hanzo.
Junkrat
Low skill character. Spam left click and win. Use riptire to be even more OP by exploding everybody.
Mei
Don't pick her. She's the second most low skill character in the game. Be annoying and hold left click to freeze and then press right click to kill.
Torbjörn
Ripoff Engineer. Build turrets and upgrade and repair them. Have your turrets be annoying and almost imposible to hit.
Widowmaker
Be another sniper and have everyone hate you if you kill somebody with a body shot and grapple around and make you almost impossible to deal with and hit.