Back from the Past

"Back from the Past" is an episode from the third season of TMNT: Family Issues, and a crossover with Teenage Mutant Ninja Turtles (1987). Directed by Sage Cotugno from a script by Kevin Eastman, the episode was released on Paramount+.
== Synopsis ==
Mei receives the help sheneeds when she and her brothers are forced to help their counterparts from another dimension with prpblems of their own.
== Plot ==
During a dinner, the turtkes and their friends attempt to cheer Mei up after what happened in New York. However, she instead leaves after being reminded of her tragedies.
A few hours later, a mysterious portal opens in the farm's basement, and Michaelangelo, after giving Mei some leftovers, overhears strange vouces from the basement. He informs this to his siblings, who are quick to respond. Upon opening the door, however, they find the intruders are counterparts of themselves from another reality.
== Voice cast ==
=== Main cast ===
* Chloe Bennet as Mei Peih Chi
* Zeno Robinson as Leonardo
* Greg Cipes as Michaelangelo
* Nolan North as Raphael
* Phil LaMarr as Donatello
* Ally Maki as April O'Neil
* Jeremy Renner as Casey Jones
=== Guest cast ===
* Mae Whitman as Robyn
* Cam Clarke as 80's Leonardo and 80's Rocksteady
* Rob Paulsen as 80's Raphael
* Towand Colesman as 80's Michaelangelo
* Barry Gordon as 80's Donatello and 80's Bebop
* Pat Fraley as 80's Krang
* Jim Cummings as 80's Shredder
== Trivia ==
* Upon meeyong their 80s selves, the Turtles mention their past experiences with alternative realities, alluding to the film TMNT: Battle Nexus.
* According to director Sage Cotugno, the producers didn't wanted the 80s Turtles to be potrayed as "lame and inexperiemced fighters", deeming it disrespectful to the character and repetitive of how they were potrayed in Turtles Forever and the 2012 series.