'Pokemon Go' Regirock, Registeel February Five-Star Raid Guide: When Will They Appear, Is There Shiny Version + Weakness, Best Counters
Niantic announced that Regirock and Registeel, two of the Legendary Titans of Hoenn region, will return in Pokemon Go as part of both the Five-Star Raids and Raid Hours for February, giving its Trainers the chance to catch either one of them.
Source: gamenguide.com