>>718929871
Kris and Noelle are both children and Spamton is an incoherent schizo. Absent of any other context, a character being referred to with "-chan" is not nearly as definitive about their identity as say a character being referred to with "she" in English, for example.
People who go to the Japanese translation for evidence to support their theories rarely have a working understanding of Japanese and will always choose to interpret what they find in the way that supports their agenda, a very poor approach to a very context-heavy language.