Myaxx from Ben 10. I've made this per user request and wanted to see if I could make it work. This is focused on her Omniverse appearance. I didn't have much to work with, please keep in mind it might not generate accurate to the character all the time. The red line markings on her body don't always generate fully and sometimes she'll get those lines on her tentacle hair too, so just a heads up on that.
Positive Prompts: MyaxxBTOV, alien girl, noseless, black eyebrows, short eyebrows, red sclera, no pupils, black lips, tentacle hair, olive green body, olive green skin, red line markings
For the outfit: head accessory, red armor, spiked shoulder pads, red arm armor, fingerless armwear, leg armor
For the negative prompts put these in for better character accuracy: nose, nostrils, human nose, spots, wrinkles, extra eyebrows, multi eyebrow, white lips, black armwear, multicolored armwear, antennae, head antennae, camel toe, facial markings, nails, claws
Sometimes it treats the head accessories as antennaes, If that happens, then don't put "alien girl" in the positive prompts. I believe that is what's triggering that from happening.