26+ the 2 u find after u catch all 26 The 26 arre all the alphabet unknown and the 2 others are the exclaimation point and question mark unknown. On the other side of Veilstone City, there is another cave go in it an a guy wants to race u to c if you can catch all of the unknown faster than he can build a tunnel, so when you catch the alphabet unknown you talk to him and he takes you to the other 2 unknowns. I think you have to have a heart scale though but im not sure.
There is 28: A-Z, ! and ?
Helps you get an Unknown.
if you mean the unknown just go into the soleceon ruins then fight as many times as you want
All it can learn is hidden power. Sorry! Unknown person.......
Different types how many letters are there in the whole alphabet.In the cave in Solacen Town infinity.
in the dead end floors
on Pokemon you go to surulen cave in surulen and cach them with a masterball
The unknown pokemon rare pokemon that u have to cath
Pearl/Diamond-Lv.30Platinum- unknown
no you don't/there is a cave to the right of solaceon town filled with only unknown
catch all the unknown from a-z then go to the digging manic
sealaceon ruins has unowns a-z!