WPNZ’s appearance: he was revealed to be a rather bulky humanoid-cyborg almost resembling a shark with sharp, jagged teeth, yellow, triangular, cat-like eyes that become red when he's highly angered or when he feels any strong emotion like sadism, feet that work like blasters that have singular black straps that go across with silver buckles and a singular strap for each leg (with some scratch marks on the boosters for the years he has had them), and metalic hands, with his left hand being the larger cuff and equipped with knuckle spikes, that can detatch itself and operate on its own, that can transform into various weapons, such as guns, chainsaws, and flamethrowers. His entire body is spiked with other miscellaneous armaments. He also wears a white shirt with a grey jacket with matching pants, a tie that looks like a knife, a pair of goggles resembling unused turrets, armored shoulder pads and leggings, along with robotic gloves with the left one being larger and has spiked knuckles that are potentially controlled via mind, remote control, someone via proxy or somehow can be controlled. His fingers have holes on the tips for where he can use them to shoot. WPNZ’s personality: Mr. WPNZ does come off as a charismatic, confident and sometimes kind person. However, in truth, he is truly a short-tempered, sociopathic, ruthless, reckless,

SMG4’s appearance: Starting with It's Gotta Be Perfect..., the model would be updated to SMG4 Redesign+ (the chosen fan name due to a poll held in March). The new model has a bigger nose, redesigned eyes with a blue iris (akin to his Mario recolors) and the pie eye shape, a more bold and squarer S on his cap with a static glitch design (referencing Glitch Productions and the current SMG4 logo introduced later), slightly bigger fingers, a more diamond shape on his overall buttons, and a return to the clean look of the Mario recolor model with hair and cloth textures. The ability for him to extend an otherwise nonexistent mustache as a gag was also removed, likely due to underuse

However, her design has been polished and updated as announced in ........Announcement?????? and has been used starting in IT'S GOTTA BE PERFECT (2023). Her overall design is now more saturated and vibrant. The overall design of the goggles has changed from resembling Bobster Slimline Goggles to taking on the appearance of J&P Cycles PACIFIC COAST SUNGLASSES Airfoil 8010 Comfort Flex Frame Goggle, Item # P39857. The goggles she wears no longer feature holes; instead, they are designed with evenly spaced squares. Her headphones now have a black headband. The design on her shirt appears somewhat distorted,.

Karen is an anthropomorphic cat with white fur and hair (with a bit of turquoise underneath her hair and in her ears) as well as a turquoise and white tail, wearing yellow reading glasses matched with a "Starbucks"-like uniform with a light green T shirt and an average green cap and matching apron with her name tag. She wears black leggings with black boots and also has a red bow on her tail. Karen Katphish, formerly referred to as Katana, is a modern major character in the SMG4 series. She is an anthropomorphic cat and single mother of three children zack Cory and Katie who works as a clerk in various stores her past with a criminal organization named Hitman, Incorporated where she met Mr. WPNZ, until she left the corporation to start a new life with her three kids until their abduction at the hands of her ex-partner with good-intended, but ultimately hazardous,

Toomp is a cute little ball of magenta slime[3] with a big bump on his head and little legs. Despite lacking arms, he is capable of holding things and using a steering wheel. He is also on rare occasions will shapeshift himself to form a mouth, whether it be the toothless smile when in passive mode or show razor sharp teeth when aggressive. Toomp may look cute, but he is shown to be intelligent, cunning and sneaky. Toomp enjoys causing chaos and is shown to be very trusting of Mr. WPNZ, especially after learning of Puzzles’ treachery.