Well, yes, I obviously do that every time I synth monsters... but I assumed you understood what I meant and why with the question...
I'm looking for advice on a particular monster, in this case, King Slime and its possible fusions...
King Slime can be obtained VERY EARLY (Like right after the opening ceremony if you're like me) and the fact it's rank C makes it a tremendous early booster, mix it with other family monsters to get C rank monster of their family.
I recommend Dragon family, high physical attack is very useful for not only progressing story, but also scouting monsters.
If you're at the later half of the game (Like 7+ darkoniums) then King Cureslime (King Slime x King Slime) is ABSOLUTELY useful till the end of the game.
King Slime is easy to scout, (If you don't have one in your party/storage. If you have one already the scout chances drop dramatically) it spawns with about 1/4 chance at the top of infant isle, where you took pledge. Use the well, if you see slimes playing, go back into the well and come back out. Repeat untill you see a king slime.
Edit: If you can grind a lot, synth Dark Slime, and Synth into other family rank B monsters, recommended is Infernal Armour of Devil family and Cockateer of Beast Family. These are excellent physical fighters but require more grinding then rank C
Cockateer was one of my best 3 for the later half of the game.
Also I've played the entire game with 2 physical attackers + 1 healer formation, can't recommend any magic-heavy monsters since I lack experience with them.
Does anybody know where commisioner snap is after "beating" the tournament? He walked off with the incarnus and now I don't know where to find him.