Despite looking through every DQ game's bestiary, I could not find the names of the monsters on the bottom right and left corner.

SilverSpirit said in comment #2627187:

Despite looking through every DQ game's bestiary, I could not find the names of the monsters on the bottom right and left corner.

The white fur one is called Fluffy / Watabou, and the brown fur one is Scruffy / Warubo. They're supporting characters in the dragon quest monster games.

@who8745 said in comment #2627216:

The white fur one is called Fluffy / Watabou, and the brown fur one is Scruffy / Warubo. They're supporting characters in the dragon quest monster games.

That explains why I couldn't find them, I didn't search the DQ Monster games. Thank you.