Guild Wars 2

My friend has played on my account while he was visiting me. Now he got hooked on the game and has bought an account for himself.
Problem is he would like his character from my account transfered to his new account.
Is that in any way possible?

It is not possible. Characters are tied to accounts. This is one reason sharing accounts is against the ToS.

It’s great your friend has his own copy of the game, and now you can play together. Make sure he chooses your server to play on. ; )