This is a Pic I made for Agumonofalchemy ‘s wiki. It’s also the first pic I colored in GIMP 2.10.
This depicts the Mage’s Duel storyline, which is also the first appearance of the Omega-Level Cutie Culania. Here, he summons a Golem to fight with the Alchemist while they are in the arena. This was before Culania got his onesie (I actually drew another picture with my theory on where he got it) so he just toddled around in his diaps.