While there are no capes, the red shoulders make it look like the cape's attachments. Maybe one day, this look can be completed!
In lieu of an acceptable helmet, I went with short Saiyan hair, since Gohan takes the helmet off whenever he powers up.
Remember to dance early and often, and yell the intro catchphrase while doing it: "I am the Great Saiyaman! Defender of truth! Protector of the innocent! Upholder of justice! Doer of good!"