So I have these monsters and I was wondering if they are worth keeping.
Voltiger 2x
LV 52
LV 76
Searex x4
LV 75
LV 77
LV 83
LV 67
Leviathan x2
LV 59
LV 47
Pyroviper x7
LV 85
LV 41
LV 37
LV 36
LV 36
LV 36
LV 35
Vulcaraptor x3
LV 37
LV 38
LV 72
Hydrowrm
LV 54
Georex x2
LV 36
LV 43
Dreadwolf
LV 68
If there are any more strong monsters like these that you would recommend, please do cause I’m stuck on defeating Tiamat
Et 101 different arks and claim arky
I think in the future you can get some better arks, such as plasmorex and start trying to go after OMs. The only two you probably should only end up keeping are hydrowyrm and maybe your dreadwolf. You could try farming to get some plamorexes right now, but if you really don’t want to, I suggest finding some stunners and sticking them at the end with dreadwolf so it can use last stand.
Keep them for now.The leviathan will be most useful.Get some stun skinners,like gremknight,Chopperbug,or Kentucky.
Now, is it possible to catch monsters on the island that Reijin is on?
What I don’t know about that I’ll check it out for you cant
Go to Orlen, tap the grave stone, and type in Dragon Island Blue to receive The Don. His last stand is impeccably better than dreadwolf’s.
type “Dragon Island”, not blue 
Welp. It’s been a few months since I’ve done it, my mistake.