Sy Lance is a mime who made his only appearance in Trouble with Mimes.
As Ami, Yumi, and Kaz were skipping along a field one day, a mime skips by and reveals himself to be named Sy Lance. As his behaviour implies, Sy does his best not to break silence. Soon, Sy and numerous other mimes infest the bus and it's up to Ami, Yumi and Kaz to get rid of him. At first, they try fixing his mime house that Yumi unknowingly broke, they realise they didn't fix his imaginary pool. Yumi as a mime is about to destroy Sy's "Mime Code Book" until she remembers the punishment for breaking the mime code. She makes a phone call to the tour bus until Sy answers the phone, yelling, "WHAT?! What do you want? WHO IS THIS? You're driving us all CRAZY!!!!" and as punishment, he and all the other mimes are sent to Mime Prison for breaking silence.
- His name is a pun on the term "Silence", reflecting the fact that mimes have to be quiet and not break silence.