On Earth
Eleanor Fairchild: A teenage girl who eventually becomes, Miladay.

Eleanor's Mother: An unassuming woman who loves her daughter and anxiously awaits the day when she will grow out of her comic book craze.
In Innerspace
Milady: Superhero of Innerspace.

Space Punk: The hero, captain of the Starmites, and the heart throb of the Universe.

The Starmites: A teenage band of Space youths dedicated to fighting the deadly forces of the Universe. They include:

S'up S'up Sensaboi: The organized and methodical member of the group. He plays by the rules.

Digetty Razzledazzle: The bumbling show-off of the group. Openly expresses his feelings.

Ack Ack Hackerax: The groups tough guy. He is second in command.

Shak Graa: High Priest Of Chaos, determined to destroy both Earth and Innerspace.

Trinkulus: A reptilian minstrel, once slave to Shak Graa now serving as guide to the Starmites.

Diva: Imposing and powerful Queen of Innerspace.

Bizarbara: Awkward and shy daughter of Diva. Possessed with a heart of gold and yearning to be "normal and average."

The Banshees: Amazonian bombshells, and henchwomen to Diva. They include:

Shotzi: Diva's sergeant of arms.

Balbraka: She delights in terrorizing the Starmites.

Canibelle: She delights in devouring the Starmites.

Maligna: She delights in torturing the Starmites.

Optional Banshees: Hollaback, Floss, Figga, Fofo, You Name 'em