Is This a Serious Dungeon?

A dragon with two goblin heads on its wings, a succubus with a slime prosthesis, and a minotaur with two mushrooms on its head. And the vine trap covered with white sticky slime liquid - commonly known as the big vine stick. Rhodes called the creatures that were fused at will as a specialty of the dungeon. "I melt, I melt, wait, I seem to have fused into a... God!?" ... Rhodes, who was inexplicably reincarnated into the Demon King, was trapped deep in a dungeon at the beginning. Seeing that he was about to die due to lack of magic power, fortunately, he was bound to the dungeon for symbiosis and had an exclusive panel. Not only can you absorb the magic released by visiting adventurers, but you can also upgrade and unlock monsters, facilities, research and development, magic, and your own attributes. [Goblin (unlocked) - Goblin Warrior (to be unlocked)...... Goblin King] [Mushroom Farm lv1 (continuously producing magic value for the dungeon)] [Monster Fusion LV1 (can consume magic power to fuse the blood of two different monsters) At this point, Rhodes began his own "alternative" fantasy journey. For adventurers who enter the dungeon, Rhodes will find ways to drain their magic power, and will also make combat plans for them to stimulate their potential. If he meets a large number of persistent adventurers, Rhodes will also thoughtfully give him a post-event reward. "No, although the style of painting is a bit strange, this is a serious dungeon after all. Why is it called a magic juicer!"