Looking over what I'd created previously and asking the RPG Maker folks what else I should make, realized there was an opportunity to make some monsters in a series and have them either compliment each other, or evolve from one state to the next.  I also began supporting Yanfly on Patreon about that same time and thought it would be fun to do a version of him in my style and with the evolution theme.

This pack was very fun to draw, because it was great making drawings that took guys from one level to the next, to the next.  I will probably do a follow-on part 2 soon.