Slowly Pati backed away watching Blue's body being engulfed by purple light.
Although he was expecting that Blue was going to breakthrough into the second circle, just like he did when he reached level 30, he was not expecting Blue's race would evolve too. No quests were needed to reach the next evolution, pretty convenient for a companion.
Unlike survivors that need to finish a quest, it seems companions don't need that to evolve.
Even though it's only been days since Pati got the wolf tattoo and was able to summon Red and Blue, they got stronger pretty quickly but that was thanks to him for killing the Sleeping One and letting them both eat its corpse.
Knowing that, having companions are very beneficial in this current world.