Yes, this is the Pig Friends Mod for Angry Birds Epic, and it is truly the most unforgettable & masterful thing to ever exist. The fact it's on PC too makes this better hundredfold. Also, inb4 any of y'all say anything: I'll be shortening Prince Porky's name to P.P. down below. DO NOT GET ANY OTHER THOUGHTS, as I did this purely to shorted his name for covenience.

Anyway, to explain this screenshot: I was up against Prince Porky in the 2nd castle, with a team like this - which also included a Prince Porky (specifically, the one from the third encounter, but I don't think that'll make a difference regarding what I'm gonna type here soon). When I've entered the wave that featured the enemy P.P., the cutscene started playing normally, BUT it was my P.P. that called for help from Wizpig's side - he even became bigger. Strangely, my team also had a Wizpig, but this one wasn't a victim of this funny oddity of a cutscene.

If I had to guess why this happens, it probably has something to do with Prince Porky's assets & how they're very similar all throught, so much so that they're shared in cutscenes. As for Wizpig... I dunno.