Bibidi from Dragon Ball Z

Positive Prompts: BibidiDBZ, alien, blue eyes, black pupils, green skin, black cap, black headwear

For the outfit: orange cape, dark-blue topwear, dark-blue chest piece, yellow buckle, yellow footwear

Extra: purple tongue, fangs

Put "anthro" in the positive prompts if the AI starts making him look like a human. If his chin antennas generate too short, then try and put "long antennas" and that should help. Also, if the AI generates antennas on the character's forehead then put "forehead antennas" in the negative prompts.