This is a Pokemon Go battle against a Team Rocket Grunt that has a Golett, a Golett, and a Froslass. I ended up catching the shadow 3 star golett, after defeating the rocket team using only my Lapras.
The rocket grunt’s dialogue for this encounter:
Before battle- “Intruder spotted!” “” “”
After battle- “”
Music: Original music from Pokemon battles in the Red and Blue games. All rights to this music belong to the respective owners.