Facty is a tall human with brown eyes, a constant hot pink blush, grayish-black glasses, and blond hair. They currently wear a blue t-shirt with a lightbulb character on it and words saying: Fact Attack Adventures, followed with red pants and green shoes, though in multiple early episodes, they wore a green shirt with a picture of the Ashwagandha plant on the front, and pink pants. Their personality is known as enthusiastic and adventurous but might have a short temper, but respectful!

Lightbulb has a lightbulb for a head, green eyes, a constant blush, and has the same blue Fact Attack Adventures shirt worn by other major characters. He also wears green pants and red shoes, presumably sneakers. His personality is known for adventurous and patient

Martian is a green alien with four arms, pure black eyes, and antennas on the top of it's head. It wears brown, under-rim glasses and the same blue Fact Attack Adventures shirt that the other main characters have. Their personality is known for being sweet and happiness but sometimes bring destructive everywhere he goes.