Pugsley Addams is submissive, gentle, and loving, which stands in contrast to his sister Wednesday's ruthless personality. He is an inventive troublemaker with a keen interest in explosives and building unusual gadgets, though less diabolical. Pugsley is sensitive and emotionally open, contrasting with Wednesday's disdain for feelings. He cares very deeply for his family and wholeheartedly embraces their love of macabre. Pugsley has black hair, a slight chubby and lean build, short black hair, brown eyes, and light freckles. Pugsley wears the signature Addams colors, black and white, in his outfits. Usually donning a striped t-shirt and black pants. When he starts going to Nevermore, he wears the school uniform with his striped shirt over his dress shirt. Like his uncle Fester, Pugsley can generate static electricity from his hands due to control or strong emotions he can't control, this power is called Electrokinesis. He can also withstand physical torture and punishment, he also is very skilled on explosives and can blow things up with ease if he wants to. He used to be bullied before joining his older sister, Wednesday, at Nevermore Academy, which is a school for outcasts. Pugsley is the younger brother of Wednesday and son of Morticia and Gomez Addams. Pugsley is a huge foodie and eats bugs as snacks.

Wednesday is known for her bluntness, obsession with all things dark and deadly, and sadistic personality. She has a very grim outlook on life and is quite pessimistic, but to her that isn't a bad thing. She is very witty and snarky, and often engages in verbal sparring matches with Bianca Barclay. She has psychic abilities which manifest in visions. These visions are caused by touch, whether through a person or an object. These visions are typically negative, and are not always 100% reliable. Wednesday is extremely intelligent, although she sometimes gets in her own way. Wednesday, while still generally emotionless in nature, slowly grows more compassionate towards her friends, mainly Enid Sinclair, Agnes DeMille and Eugene Ottinger. She also expresses a deep love for her family, even if she doesn't do so in a normal way. Wednesday has very pale skin, dark brown eyes, and jet black hair that is always plaited in two very long braids, as well as bangs. She has a blank stare, and rarely alters her vacant expression. Her nails are always painted black. Wednesday is 5'1". She wears exclusively black and white, she dawns a black version of the Nevermore uniform. She usually has on black platform sneakers or boots. Wednesday is the older sister of Pugsley and daughter of Morticia and Gomez Addams.

Enid's personality is best described as a bubbly, optimistic, and colorful contrast to Wednesday Addams, embodying a carefree, cheerful, and friendly demeanor. She is an excitable, loyal, and caring friend with a penchant for social media and school gossip, though she can become frustrated or emotionally reactive when her patience is tested or her loved ones are in danger. Enid has blonde hair with blue and pink highlights at the ends and blue eyes. Oftentimes, she wears her hair out, but occasionally she is seen with a braid on her right side. She has light freckles and different-colored nails that turn into claws at different points. Enid can transform into a werewolf when it's a full moon and shows werewolf tendencies even in human form. Enid is the best friend of Wednesday.

Agnes is quite mischievous and devious, often sneaking around using her invisibility to spy on others and appearing only to shock others which she finds very amusing. Agnes has auburn hair and emerald eyes, along with a pale complexion. Her long hair is styled similarly to Wednesday's, with two braids tied at the ends with black ribbons. However, her fringe is shorter than Wednesday's and does not reach her brow. Agnes wears the traditional Nevermore uniform with no alterations, like most of the students at Nevermore. Agnes has invisibility and has great stealth skills. Agnes is Enid and Wednesday's friend.

Eugene is a teenage boy with a lean appearance consisting of black ringleted hair, and brown eyes. His school attire is the proper Nevermore uniform, with the blazer unbuttoned and the sweater vest showing along with his black glasses. He wears a hoodie layered underneath the blazer. Eugene has the ability to control bees. While his strong connection with his bees was always apparent, he has the ability to manipulate them by making a swarm of bees attack. Eugene is Pugsley's friend and roommate.