The phrase "powerful demon" refers to a creature that has a lot of strength, supernatural abilities, and is often associated with evil or darkness. Full definition
By fusing your demons together, you can create more powerful demons with a mix of skills from the two (or more) sources as well as new ones. (nintendowire.com)
Once again, players will be able to fuse two or even three demons together to create newer, more powerful demons. (randomnpc.com)
Their pursuit of the all - powerful demon emperor leads players through a great variety of locations, which are then used for a variety of gameplay quirks. (mypotatogames.com)