Cyclohm currently has no Pokedex entry, but it looks like it has a similar origin to Heatran. Born in the clouds of a raging storm just as Heatran formed from the lava of a huge volcano. With this in mind, they seem a lot like they could be part of a legendary elemental trio.

There's clearly more than one of both, otherwise they wouldn't have genders. Let's ignore the fact that Heatran can't breed for now.

Nintendo hasn't really done anything with Heatran, so it'd be interesting if they were part of a legendary trio, or just a pair.
If CAP ever introduces another water type, we might just see the third...

the final of the trio would obviously have to be water with a cool/unique secondary type as well (like dragon or steel, but those are taken). i'm thinking water/ghost!

Pokedex entry:

"A servant of KYOGRE, AQUABYSS come from the depths of the abyss to try to soak the world in a flood. If you see an AQUABYSS, it will rain the next week without stopping."

Heh, funny that Cap 10 really did wind up being a water type, though not water/ghost.

It may not fit as the third. Cyclohm is also an electric and Water/Electric isn't a unique typing.

Remember, Game Freak often makes Fire/Electric/Ice trios as well. The third member doen't have to be Water.

well ElectricDragon is unique, I haven't seen one single pokèmon that is Electric/dragon, and I've searched through all 493!

Syclant is the third part of the tri-*shot*

SYCLANT IS THE THIRD MEMBER OF THE TRIO! (withstands bullet with bulletproof vest)

I agreee-*electrecuted by Cyclohm*

Agreed.