SILLIES just realized that I've never shown these kids/fusions here!
Exitement is an always-positive but slightly nervous person, who waits for something good to happen all the time. As a fankid, she was born out of love, as a fusion she was formed after Joy and Anxiety's reunion.
Powerlessness is a tired person who can only look at other, more active people from time to time. She rarely feels something, but easily becomes a follower. As a fankid, she was born out of friendship, as a fusion she was formed after Envy just asked Ennui to fuse for fun.
These two are co-existing and are friends in any way btw!!