Octonaughty is made up of 8 bright magenta/hot pink blocks, with 8 green octopus-like limbs of which he uses six for arms and two for legs (mostly used in a 2x4 arrangement). He wears a purple infinity symbol-shaped mask with 8 spikes, 4 on each side, with a green bandana covering it. He is Octoblock's arch-enemy and villain counterpart, proven by his high-pitched, goofy voice, and everything he does is the reverse of what Octoblock does, as his catchphrase is "Octonaughty, (command)! 8, 7, 6, 5, 4, 3, 2, 1, (said command)!" (however, this only happened in 1 episode). Unlike Octoblock who is brave, heroic and helpful, Octonaughty is very selfish, always coming up with schemes to defeat Octoblock that always fail. He is also rather cowardly, shown when he escapes every time his plans fail. He has a high-pitched, goofy voice and has a very naughty personality. He can't sleep without his stuffed bear. (don't mind the voice, lol ._.)

Appearance: Crikey is very tall and massive. He has a strong, wide chest and large, bulky arms. His clothing consists of a yellow sleeveless shirt with the numbers "00" on the front of it. Sharp spikes protrude from his shoulders and extend all the way to his back. He has yellow glass eyes without pupils; they seem to glow during night time. Inside his mouth reveals he has 2 sharp fangs. He has four fingers. He has rounded ears on the side of his head; his right ear has a small golden earring hanging loosely from it. He has a sleek black, pointed mohawk. Despite his great size, his legs are humorously very small in comparison to the rest of his body. Personality: He has a mean and heartless personality. He is VERY sensitive to insults about his mohawk. He claims to hate hugs, but secretly adores hugs. He's actually a pretty good friend once he warms up to you. (Don't mind the voice, also YIPPEE I CAN USE GALLERY IMAGES NOW! also also, sorry for the small personality, there wasn't a lot to go off of)

Big Trouble: appearance: Big Trouble is tall and thin. He also has lavender skin. He wears purple ski goggles, an orange shirt with an indigo stripe down the middle and short, indigo sleeves, orange shorts that match his shirt, blue ankle socks, blue, slipper-like shoes, and blue gloves. His blue hair stands up like a paintbrush, but when he gets scared, it puffs up like a cat's tail. Due to his short pants, during cold weather, he often puts on orange leggings. personality: Big Trouble has a tendency to be dimwitted and childish. He is Little Trouble's younger brother. He is very clingy and doesn't like not knowing where his older brother is. He is shown to be 7 years younger than Little Trouble. He can be very naive, but often thinks things through more than his older brother. He often makes jokes. He is very disorganized, but always does things right on time. He's like, two inches tall. (this is also full of headcanons.)

Zorak is a green mantis with a beak. He is hunched over. Zorak usually wears a blue or red vest with a speedo. His wings are either black or blue. He wears yellow or blue gloves and boots. Zorak sometimes wears blue gloves and socks. He is very mean, and HATES being called a grasshopper. His voice is very nasal. Don't ask how he chews his food, even though he doesn't have teeth. He often gets zapped by space ghost.

Blockzilla is a massive, green monster who resembles a cross between a dinosaur and a lizard. She has a rather round-shaped body with two yellow-tinted eyes on top, with small black pupils and green floating eyebrows. She also has olive frills on the sides of her body, and two nostrils. Her main defining feature is the big black lips on her wide, gaping mouth, which resemble the number comparison signs (</>/=). When Blockzilla switches to the equals sign, the top and lower portions of her body become disembodied, with the top part floating. Blockzilla is mostly seen half-buried in the ground, but whenever she isn't in the ground she has green arms and legs with red claws, and a long green tail. Blockzilla loves big things, because that's what she loves to play with. As soon as she sees two numbers, she indicates which number is greater and which is less. She also talks in broken English, referring to herself by her name or "me" instead of "I", as well as using very simple words for verbs. She can act rather immature and childish. (sorry about the voice/image)

This is Hex Nut! Hex Nut: A cute, polite robot that likes humans, but has no idea of his own strengh, leading him to accidentally injure people a lot. Is very tall (10'4) Really likes waffle fries. Could probably lift you in the air like a baby. Doesn't cuss at all. Cries very easily. Gets pouty when his batteries get low. Acts like a toddler. Loves ice cream.