Etzor is an angry boy from Frank Lady World, who has major trust issues. He trusts his classmates, but outsiders take some time for him to warm up to. He excels best in his science class, and is often very helpful in aiding his classmates. Etzor lives in a green house on Would Say Avenue, and doesn't often leave his home for things other than school.
Yella is a body guard for the CrY family who is assigned to protect honored guests as well. She is very concerned about her comrades' well-beings and is always looking out for them. Yella cares a lot about her family and will do anything in her power to protect them. She is very good at her job, which is why Mr. Q puts so much trust in her. Yella ends up leading Punchy and Chozu through the underground Party Place during their visit.