Who is the oldest in PJ Masks?

Could you clarify for me, who exactly is being referred to as the "oldest" in the context of "PJ Masks"? Are we talking about the human characters, the animal heroes, or perhaps the villains they face? Without knowing the specific cast of characters, it's difficult to definitively state who is the oldest. However, if we're assuming it's among the CORE trio of Catboy, Owlette, and Gekko, it would be interesting to speculate based on their physical appearances or personalities, but ultimately, the show's creators would have to confirm who they intended as the oldest member of the team.