Yeah, but most of them have them in hidden places, like Dora's.
The only one I know that has one visible is Tai, and even she used to have more until jeph got too lazy and removed the anchor.
Adding to that, half the time they're drawn terribly, even for Jeph, to the point that Doar's flames look more like someone smeared ketchup and mustard on her ass.
You can tell Jeph is just a tryhard tool who thinks he can substitute tattoos for a personality.
He's like a Mac user, he wants to be different from everyone else in the same way as everyone else with the only difference being what stickers he decides to put on his cover.