Where's cryoling & greenmane

Hunter Island Where's that Monster
1

I was on crescent island n a gargoyle summoned one I want to know where or how do I get one.

2

Possibly one of the Arkadions that are gold egg only. Ive got over 100% of monsters captured, and I’ve never seen them.

3

greenmane is pvp prize, at 12500 I think. cryoling is a future event monster

4

Cryoling -> Cryowyrm I believe

5

Ok thanks