I know this probably creeps most folks the hell out with all the fake face masks and skin-ripping and Mission: Impossible tomfoolery, but understand this:
1) American Mom is NOT just your average patriotically-themed deliberately MILFy superheroine (hated by Mothers Against American Mom, 'MAAM') with super strength, super speed and near invulnerability. It's all well and fine to just have her flying around or doing cheesecake pin-up poses. I do that to promote her, especially as 'Freedom' during WW2.
2) She has a distinct skill set, mastery of disguise. She uses it, she is very, very good at it and she enjoys it. She's been doing it since 1940. In fact, most of her other non-boilerplate powers are dedicated towards it: limited shapeshifting ability, touch-based unconscious kinesis allowing her to control her mask's facial expressions to perfectly match her own, subtle mind control to persuade people she is who she claims to be, which developed into the Maternal Voice or 'The Voice', the ability to influence others to do as she says; the way mothers can control their kids just by the intonation of their voice. It makes the disguise more convincing. It is part of her powers.
3) Therefore, if you'd like to use my OC American Mom a) please ask for permission first, and b) I reserve the right to say 'yes or 'no', and c) I'd like it if you could include her disguise skills- it's what she does. It's the sheer preposterousness of this flag-draped hottie powerhouse ripping out of a disguise that works to her advantage, surprising enemies and stunning them into submission. You'd normally expect her to come zooming in from half a world away carrying a flag with theme music and folks pointing up saying 'Look to the skies!', not be lurking in the same room with you, that's the whole point. She's not just 'Captain America and Wonder Woman's love child who also loves to mentor younger heroes'. Yes, she's a cape, but she has certain advantages and is pretty useful to have around.