Nothing happens, except the fact that you have many Unowns. ~Katie
The tunnel on top the ruins is accessible.The tunnel is where you catch the ? and ! Unown.
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.
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
Nothing happens, except the fact that you have many Unowns. ~Katie
The tunnel on top the ruins is accessible.The tunnel is where you catch the ? and ! Unown.
Nothing, sadly.
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.
nothing
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.
There's not much after that. You can go to seven island and catch all the unown, but I'm not sure if that does anything.
you catch unowns just to fill out your unown notes. nothing happens when you catch all 28 of them including ! and ?
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
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.
Nothing really; just some information for the unown report... and the pleasure you get!