Siri is a character in the Disney shorts series "School hacks", which is about some students' daily school lives. Siri is the most intelligent and brilliant student. Her best friend is the influencer Mimy, although they have very different personalities. Leo is in love with her, but he's unable to reveal it to her.
I'm not so sure this is a viable choice for American kids anymore, given the new iPhone gadget Siri, who talks to you from your phone and gives you directions/tells you your schedule/etc. As cool of a piece of software as it is, it's still software.