The Pokemon Unkown.
i havn't done it yet but if you catch all the unowns and go to the ruin maniac in ruin maniac cave, he'll most likely give you something nice
You can see one at the Ruin Maniac's cave, which is just south of Veilstone City. You have a 5% rate of meeting it, but don't worry, because the Pokemon that are available there are only Hippopotas, Zubat and Geodude, so the 5% is actually a lot. The rate of meeting Hippopotas increases if you have more Unown, but you can also catch one without any Unowns.
I think you have to get all 26 unknown, go to rt 214 into the ruin maniac tunnel, and there will be a cave connecting you to the room in solaceon ruins and you can exit to get the item there, but you must go back tho=rouh the tunnel.
First you go to Veilstone City.Then keep going south.You'll end up at Route 214.You'll see stairs if you go straight slowly.Then you'll see a cave entrance.Go in.You'll see the Ruin Maniac.But, you know how you go to the Solaceon Ruins you see another cave entrance on top of the bottom one?Well if you catch all the unowns(A-Z),you can get up there by going to the Ruin Maniac.You'll see after that it will be the Ruin Maniac tunnel.Oh yeah there are only two ways to make the Maniac Tunnel.Catch all the unowns, or complete the national dex.
Capature All the unkowns. The located on the right of Solocaoen Town.
on route 214 by the ruin maniac
ruin maniac tunnel
In the ruin maniac's cave.
Hippopotas is located in the Ruin Maniac cave in Pokemon Platinum.
Hippopotas is in Ruin Maniac's Cave.
you can get him in ruin maniac cave.you can also go to Pokemon marriland pokedex or platinum pokedex.
Go to Route 214 and go in the ruin maniac cave.
he digs for you
The Ruin Maniac's Cave. Which is on the face of the mountain on Route 214.
You find no 122 A.K.A. Hippopotas in the ruin maniac cave Hope i helped!
The Solaceon Ruin extension can be access from the Route below Veilstone where the Ruin Maniac is digging. Once you have all 24 of the Alphabet, you can get to the other part.
if you look around in 'ruin maniac's cave' you can find hippopotas , or you can breed a hippodown.