Most of you that know me know I'm a power rangers/Sentai/ kamen rider Fan. That is not the reason they are wearing a helmet. When I was younger I watch a lot of sci-fi shows that had a motorcycle helmet theme vigilantes.
Street Hawk: en.wikipedia.org/wiki/Street_Hawk
Super force: http://en.wikipedia.org/wiki/Super_Force
Another influence I would have to site and this may sound odd but Tales from the crypt.
This was one of the main influences for Bloodwork and Penance stories. I used the first three influences for Cat Scratch and Kaymi. Now the helmets are just for look. I do have plots for them in all of mine stories and they have a lot to do with the character that's wearing them. As for the reason all my oc's wear body suits no it is not for me to stare at. a lot of female characters in comics , movies and any kind of story usually wear outfits that either has a lot of skimpy and exposed part that annoyed the hell out of me. I mean if they're in a knife fight or close combat Nine times out of ten some one is gonna strike that spot and it's supposed to be a shock to the audience. *Sign* Plus I swear the creator or designer just wanted to show off some fan service. FUCK IT, LET'S SHOW THEM SOME CLEAVAGE. Anyways I find the body suits a lot more practical in design and Suitable for the situations I put them in.