If you mean the ? unown then after you catch the 26 alphabet unown you go to the place with the ladder on the place where you go down the ladder and click on the back panel and the ? and ! unown will be in the room (talk to the men in the lab place first)
If you mean the unknown, it looks just like a question mark, but with a face. Hope this helps! If it didn't reply to me and I'll try to explain it better.
No, there are no underwater routes in Pokemon HeartGold or SoulSilver. The HM Dive is not available in Pokemon HeartGold or SoulSilver.
you cant catch persian in heartgold.... i think
YES=)
Yes you most definitely can
You need a Rotom as the first Pokemon in your team.
go to bills PC then go to move Pokemon then click on the Pokemon and go down to mark
Erm........do you mean (Five question mark) Glitch Pokemon?
This question makes no sense. Try rephrasing it.
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
If you enjoy a challenge, then yes. This is an opinionatic question and answer.
They are not in Pokemon HeartGold
Unown (?)
you cant
where is the pokemon transfer lab in heartgold
No, but you can trade Pokemon only in HeartGold to Black
That is impossible in Pokemon HeartGold and SoulSilver.