Assuming you are talking about just the letter Unown, after you catch the A-Z you unlock the room where you can catch the "?" and "!" unown who have a half-closed eye unlike the others. From there...well you helped those scientists complete their studies and if you dedicate a box to them (Like I did lol) you have yourself a pretty cool display
The tunnel on top the ruins is accessible.The tunnel is where you catch the ? and ! Unown.
Nothing, really.
In Diamond/Pearl/Platinum, after you have caught all the Unown the Maniac Tunnel on Route 214 will be fully accessible, now you can catch the "?" and "!" Unown.
If you solve all 4 puzzles it will unlock the 26 "letter" unown. If you open the 4 back rooms (using an escape rope, flash, water stone, and Ho-Oh), catch all 26 unown, and talk to the researcher in the building it will unlock the ! and ? unown. Catch them and talk to the guy again. This will complete the unown side quest, but that's about it. Nothing really special unless you just really have to have all 28 unown.
If you catch 26 Unown in Pokemon Diamond, go to Ruin Maniac Cave. He will be waiting inside for you. You can catch Hippopatos in the cave, along with Geodude. Go to the end of the cave where there is another entrance. Go through, and when you get inside, you will see a writing on the wall. It says, "?!" Those two Unown are in there. Capture them. You now have all the Unown.
you catch unowns just to fill out your unown notes. nothing happens when you catch all 28 of them including ! and ?
Nothing really; just some information for the unown report... and the pleasure you get!
In the games that came before heartgold and soulsilver, I don't believe anything special happens. In Heartgold and Soulsilver, you can now catch the last 2 unown (the "!" and the "?") in the Hall Of The Ruins Of Alph. Then the scientist that gave you the unown recorder comes out and gives you a pat on the back...
The tunnel on top the ruins is accessible.The tunnel is where you catch the ? and ! Unown.
Nothing, sadly.
in Pokemon heartgold ruins of alph in Pokemon soulsilver ruins of alph
you have to solve the puzzles and capture or catch all types of unown
Nothing, really.
Once you catch the 26 letters of the alphabet in Unown, the Maniac Tunnel on Route 214 will be complete, allowing you to catch Unown in '!' and '?' forms. Other than that, nothing else is unlocked.
In Diamond/Pearl/Platinum, after you have caught all the Unown the Maniac Tunnel on Route 214 will be fully accessible, now you can catch the "?" and "!" Unown.
If you solve all 4 puzzles it will unlock the 26 "letter" unown. If you open the 4 back rooms (using an escape rope, flash, water stone, and Ho-Oh), catch all 26 unown, and talk to the researcher in the building it will unlock the ! and ? unown. Catch them and talk to the guy again. This will complete the unown side quest, but that's about it. Nothing really special unless you just really have to have all 28 unown.
in Pokemon soulsilver, if you catch all of the unowns and solve and read all of the letter puzzles, unown ? and ! will appear in the hall entrance. thieir pokeathleon preformance is 1 star higher than an original unown. to solve the letter puzzles,you need a water stone, and escape rope, ho-oh, a Pokemon that knows flash, a Pokemon that known surf and a Pokemon that knows strength