Meggy Spletzer is a central, highly athletic, and frequently divisive character in the SMG4 web series, transitioning from a competitive Inkling to a human mentor and coach. Defined by her intense drive, trauma from losing friends, and close bond with Mario, she is often considered a deeply developed yet occasionally combative protagonist. Body type is athletic with slight curves.

Tari is a kind-hearted, shy, and pacifist gamer known for her expertise in video games and love for rubber ducks. Primarily featured in the SMG4 series and as the protagonist of Meta Runner (where she is revealed to be a sentient A.I. named Turbo Artificial Rapid Intelligence), she often acts as a loyal, supportive friend who overcomes insecurity to protect others. Body type is slim with small mounds for her butt and breasts

Melony from SMG4 is a complex character who evolved from an inanimate, nameless watermelon into a powerful, humanized hacker-goddess. Originally lazy and naive, she developed into a determined protector fueled by grief and the desire to honor her fallen friend, Axol, maturing from a childish demeanor to a mature artist and fighter. Body type is very curvy and plump due to her sleeping anywhere and time.

Saiko Bichitaru is a major, evolving character in the SMG4 web series, originally introduced in 2018 as a jealous, yandere-style antagonist brought to life from a dating simulator. Over time, she has transitioned from a mentally unstable villain into a protective anti-hero and core member of the SMG4 gang, often displaying high strength, a fiery temper, and a deep, nurturing bond with friends like Tari and Meggy Spletzer. Body type is tall with good bouncy curves but still muscular abs and arms.