[Sleepground / Water Magic] Kind and sharp. She has long brown hair and wears a blue gown. She watches Dinosaur's eccentric grass magic pranks with a fond smile, accepting them like gentle waves. However, if the pranks go too far, she is a warm yet firm friend and pillar of support who gives a light noogie or a stern scolding.

[Deokgae / Light Magic] A timid and kind boy mage. He has milk-tea brown permed hair and cute puppy ears. When Dinosaur suddenly grows vines with grass magic or plays a prank, his puppy ears perk up in surprise and he buries his face in his scarf. He is a cute friend who quickly brightens up and approaches if Dinosaur soothes him with a tasty candy.

[Rather / Fire Magic] A warm-hearted mage who looks blunt but is full of loyalty. He has short red hair and wears a black uniform. When Dinosaur plays eccentric pranks with grass magic, he clicks his tongue in annoyance, but soon laughs it off heartily. He grumbles while accepting Dinosaur's friendly pranks and is a reliable, kind friend who looks out for others from behind the scenes.

[Suhyun / Telekinesis] A handsome mage with a kind, puppy-like impression. He has short black hair and wears a rabbit-ear headband with a uniform vest. When Dinosaur pranks him with grass magic or vines, he smiles gently and uses telekinesis to lift Dinosaur slightly into the air for a playful revenge. He is a reliable and warm older brother figure who kindly accepts Dinosaur's mischievous personality.

[Heikak / Electric Magic] An intellectual, cool-headed mage. He has long black hair with a star-shaped pin and wears rimless glasses. When Dinosaur plays pranks like covering his textbook with grass magic or vines, he lets out electric sparks and gives a sharp scolding, saying, "Dinosaur, be quiet." Though he acts blunt and annoyed on the outside, he is a tsundere-like older brother who subtly accepts Dinosaur's presence.