Maggie and the Beast

My kids are currently obsessed with Maggie and the Ferocious Beast. All day long they play Maggie. A is generally the Beast, and crawls around with "goulashes" (otherwise known as rain boots) on her hands and feet. C is generally Maggie, as she comes up with the "big ideas." I am relegated to Hamilton, "because he cleans, Mom." I have offered to be the Beast on many occasion, as what could be more fun than crawling around the floor with goulashes on your hands, but have always been told that no, I MUST be Hamilton. Only A or C get to be the Beast.

When M got home tonight, A begged him to play Maggie with her. When he asked who he should be, she thought for a moment, and then exclaimed "Why the Beast of course!" I was somewhat offended. Is M that much more fun than I that HE can play the Beast but I can only play neurotic Hamilton?