Solution: PH21: Introduction to Sprite Design
Answer: DARKNESS
Written by Derek Young
All of these characters are from video game franchises featured as modules in Puzzle Hunt 21.
Princess DAISY from Super Mario Odyssey
The ARBITER from Halo
RUSH from Mega Man
Keke from Baba is You
NATU from Pokemon GO
ENDERMAN from Minecraft
SAMUS from Super Metroid
SONIC the Hedgehog from Genesis
The first letters of all these characters, taken in order, spell out the answer DARKNESS.