Freddy:
Hug him for 30 seconds and Slap him.
Chica:
Touch her Breasts. Simple.
Foxy:
Be Nightguard and when he appears, Make him walk the plank.
Bonnie:
Hack his Motherboard and Make him hop around the whole Pizzaria, then Make him jump to the nearest puddle of water.
Golden Freddy:
Sell Him for $1,000,000,000.
Puppet:
Attach Strings to Him.
Balloon Boy:
Pop his Balloons.
Withered Freddy:
Make him wear a hat and attach claws to him and call him Freddy Kruger. :P
Springtrap:
Take him apart and program him to do stupid things.
Purple Guy:
Paint him blue and Call him Blue Boy.
Toy Chica:
Stick a Jelly Bean up her behind.
Phantom Bonnie:
When he Powers off, Turn his head around.
Mangle:
Sing you are a Pirate at him.