>>37719225Sobble seems to be heavily based off of a Marine Iguana. So the evolution line can continue along the reptile route by using a "sea-dragon" theme.
But since this is a region based on England (by extension, we can include Scotland too) then we can take this idea further.
The only popular "sea dragon" that could be used would be the Loch Ness Monster; a literal cryptid.
If Sobble’s final evolution were based on a cryptid, it would make PERFECT sense why Sobble has the description of being timid and nervous. And based on the trailer, they have the ability to turn INVISIBLE in the water. So Sobble is nervous around people and turns invisible to hide from them. Sounds a lot like a future cryptid.