(They are siblings OMG lol) Fizzy&Smoothie. Fizzy is 792 Ichor and requires 50% Research on Twisted Smoothie and you have to encounter Fizzys Twisted counterpart. Smoothie (Main Character): Smoothie is 2,598 Ichor and requires 100% Research on Twisted Fizzy and 3 Mastery quests on Fizzy to be finished.
(Smoothie is a Distractor and Fizzy is an all-rounder. meaning that Fizzy can heal, Extract, and possibly distract.) It is common to encounter Twisted Fizzy so yeah.