The lists below are not set in stone, they are subject to change whenever any monster is introduced. The more input we get, the more accurate and up-to-date they will be.
The General list assumes no specific support, so while monsters like stormloch can be good, without support they are mediocre. This is because this list is primarily for new players who have obtained a new monster and want to know how good it is. Please bear this in mind when making suggestions.
The PvP list assumes full support, and often considers teams that revolve around these monsters. As such this list is far more volatile as it will change with the meta, so feel free to suggest radical changes if you feel like they are justified.
For the super epic and epic monsters, due to several different monsters having the same moveset (varying by element) they are listed according to the movesets and abilities rather than by name. Certain monsters with unique movesets like blitzdragon are listed by name. A monster listed as [move]/[move] must have both of the moves listed. Same with abilities, if a move and an ability is listed the monster must have both.