Sparring Partner

"Sparring Partner" is an upcoming episode of Rise of the Teenage Mutant Ninja Turtles. It is set to air on April 20th, 2019

Synopsis
Raph becomes friends with a new sparring partner and has to keep it a secret from his brothers who don't like the guy

Reference
https://www.tvpassport.com/series/rise-of-the-teenage-mutant-ninja-turtles/369330