A large amount of solo superhero comics roughly follow the following cast set up, similar to the 5 man band for ensembles.
Hero (no surprise there)
Civilian Cast: usually don't know secret identity
Parent(s) (usually only one, sometimes guardian, uncle, grandparent)
Disposable Civilian Love interest
Hero-ing cast: May not know civilian identity.
Nakama and friendly guest stars
Tech and info person. Mission control.
Reporter/Police Officer. 2 varieties:
1) Helpful, friendly version. Gives info, keeps others off hero's back. Ally.
2) Grudging, curious or Knight Templar version who tries to discover hero's identity or frame them. Neutral-to-foe.
Mentor. May come down under mission control or parent or nakama/friend guest star
Superhero love interest: Generally gets more screen time than civilian counterpart; less likely to end up a Scrappy or Wesley.
Archenemy: often the Big Bad. May be a shadow counterpart, or polar opposite, of the hero. Might be inherited from mentor, or previous legacy holder.
Rogues Gallery: the recurring, vaguely aligned foes of the hero
Crisis/Crossover foes: pop up briefly as Big Bads for Crises and Crossovers, with little prompting within the solo book
- A large amount of superhero comics use this template:
Spiderman, Robin, Red Robin, Batgirl (all volumes), Flash, Nightwing, old Supergirl, Powergirl.... a fair few