Misty

Misty (known as Kasumi in Japanese) is a main character of the first Pokémon anime.

She only appears in the Ash lore once, in the background of a short outtake where she pushes Brock away from Candela and proceeds to hug Blanche. In the same strip, Ash and Spark are looking at a Pikachu-shaped phone charger.

She is aged up significantly from her appearances in the anime.

It is unknown if either she, Brock, or Ash will appear in the actual comic.