Yes, you can catch the shiny version of Yveltal in Pokemon GO, but only if you are very lucky.
Like all Legendary Pokemon, you can only encounter Yveltal after beating it in a Tier 5 Raid. Then, you need to hope that the Yveltal you encounter is the rare shiny version, which only appears 5% of the time.
If you want to catch a shiny Yveltal, the best time to get one is during the Yveltal Raid Hour. This is because the number of Yveltal Raids will greatly increase during this event.
How to Get Shiny Yveltal in Pokemon GO
The only way to encounter Yveltal in Pokemon GO is by first defeating it in a Tier 5 Raid. Then, it is up to luck whether the Yveltal you encounter is the standard or shiny version.
Unfortunately, there is no way of guaranteeing that you will encounter a shiny Yveltal or even boosting the chance of it being shiny.
Yveltal Shiny Odds
The odds of Yveltal being shiny in Pokemon GO is 5%, or 1 in 20 – the standard shiny rate for all Legendaries in Pokemon GO.
Therefore, on average, you’ll need to encounter 20 Yveltal before you find the rare shiny version.
What Color is Shiny Yveltal?
The shiny version of Yveltal is red and white instead of red and black. Additionally, the shiny version has markings, talons, and feathers around its neck that are a darker gray than the standard Yveltal.
As is the case with all shiny Pokemon that are white, shiny Yveltal is a highly sought-after Pokemon.