Took it from PEN1 forums.
ACE
ACTIVE
ANGEL
ANIMAL
BADBOY
BAM BAM
BANDIT
BARBER
BART SIMPSON
BASHER
BEAR
BEBOP
BIGFOOT
BIRD
BISON
BLASTER
BLAZER
BLINKY
BLIZZARD
BLUE EYES
BOMBER
BONES
BOOMER
BOOTS
BOOZER
BOUNCER
BOWSER
BOXER
BRAWLER
BRUISER
BUCKET
BUGS
BULLDOG
BULLET
BULLY
BUMPER
BUNKER
BUTCHER
BUZZER
CAMPER
CANNIBAL
CAPONE
CARTOON
CASPER
CAVEMAN
CHANCE
CHARLIE BROWN
CHASER
CHIPPER
CHOKER
CHOMPER
CHOPPER
CHUBBS
CLIPPER
CLOUDY
CLOWN
CLUMSY
CLUTCH
CONMAN
CORRUPT
COWBOY
COYOTE
CRANKY
CRASH
CRAZY
CREATURE
CREEPER
CRICKET
CRIMINAL
CRITTER
CROOK
CROW
CRUISER
CRUSHER
CURSED
CUTTER
CYCLOPS
DAMAGE
DANGER
DEADBOY
DEADEYE
DEMON
DEVIL
DICER
DIRTY
DOC
DOPER
DOUGHBOY
DOWNER
DRAGON
DREAMER
DRIFTER
DRIVER
DROOPY
DUKES
DUMPER
EARS
ECHO
EVIL
FACE
FATAL
FELON
FESTER
FIGHTER
FILTHY
FIXER
FLASH
FLIPPER
FOOLISH
FROGGY
FROSTY
GANGSTER
GERMAN
GHOST
GIANT
GLADIATOR
GOBLIN
GONZO
GOOFY
GREEDY
GREEN EYES
GREMLIN
GRINCH
GRUMPY
GUNNER
HAMMER
HANGER
HAPPY
HATCHET
HATER
HAVOC
HAZARD
HAWKEYE
HECKLER
HECTIC
HINKER
HITLER
HITMAN
HITTER
HOLLYWOOD
HOMER
HOODLUM
HOOLIGAN
HOPPER
HORNET
HORSE
HOSTILE
HULK
HUNTER
HUSTLER
HYPER
ICEMAN
INSANE
IRISH
JAWS
JAEGER
JAMMER
JESTER
JOKER
JUMPER
JUNIOR
KAISER
KAOS
KICKER
KILLER
KNUCKLES
LAZY
LEFTY
LITTLE MAN
LONER
LOWDOWN
LOWLIFE
LUCIFER
LUCKY
LUGER
LUMPY
LUNATIC
LUNKER
LURCH
LURKER
MAD DOG
MAD MAN
MAGIC
MANIAC
MANTIS
MAYHEM
MENACE
MIDGET
MINOR
MISFIT
MONSTER
MOODY
MOOSE
MOSHER
MOUSE
MUGGER
MUMBLES
MUNCHIES
MUTE
MUTTLEY
NASTY
NIGHTMARE
NITEOWL
NUTTY
OUTCAST
PAIN
PANIC
PANTHER
PANZER
PEANUT
PEEWEE
PENGUIN
PHANTOM
PIPER
PIRATE
PLAYER
PLUMBER
POCKET
POINTLESS
POKEY
POLAR
PONYBOY
POPEYE
PORKY
PSYCHO
PUNISHER
PUPPET
PUSHER
PYRO
RABBIT
RAGER
RAMBO
RANGER
RASCAL
RAZOR
REBEL
RED
REEFER
RHINO
RIDER
RIOTCHILD
RIPPER
RISKY
RIVAL
ROCKET
ROCKSTEADY
ROCKY
ROLLER
ROMPER
ROOSTER
ROSCOE
ROTTEN
ROVER
ROWDY
RUCKUS
RUGER
RUNNER
RUTHLESS
SADBOY
SAILOR
SALTY
SANDMAN
SAVAGE
SCALPER
SCARFACE
SCARY
SCOOBY
SCOOTER
SCORPIO
SCOTTISH
SCRAPPY
SCRIBBLES
SCUMMY
SHADOW
SHADY
SHAGGY
SHAMELESS
SHARKY
SHOOTER
SHORTY
SHOTGUN
SHREK
SHYBOY
SICKBOY
SILENT
SILLY
SILVER
SINISTER
SINNER
SKELLY
SKETCHER
SKINNER
SKINNY
SKIPPER
SKITZO
SKREWDRIVER
SLASHER
SLAYER
SLEEPY
SLICK
SLIM
SLINGER
SLUGGER
SMASHER
SMILEY
SMOKEY
SNAIL
SNAKE
SNAPPER
SNEAKER
SNIPER
SNOOPY
SNOWMAN
SOLDIER
SPANKY
SPARKY
SPARROW
SPEEDY
SPIDER
SPINNER
SPIRIT
SPOOKY
SPORTY
STALKER
STITCHES
STOMPER
STONE COLD
STONER
STRAIGHT JACKET
STRANGER
STRESS
STRETCH
STRIKER
SUICIDAL
SULKY
SUSPECT
SURFER
SWAMPER
SWEEPER
TANK
TANKER
TEARDROP
TEMPER
TERMITE
TERROR
THIEF
THRASHER
THUMPER
THUNDER
TIGER
TIGGER
TINMAN
TINY
TOKER
TRAVELER
TRIGGER
TRIPPER
TROOPER
TROUBLE
TURBO
TURTLE
TWEAKER
TWEETY
TWISTED
TWISTER
TWITCH
VADER
VAMPIRE
VANDAL
VICIOUS
VILLAIN
VIOLENT
VIPER
WACKO
WALKER
WARBABY
WARCHILD
WHISPER
WICKED
WIDGET
WIDOWMAKER
WILDMAN
WINGER
WINO
WIZARD
WOLF
WOODSTOCK
WOODY
WORM
WRECKER
YOUNGSTER
ZERO
ZOMBIE
