turn username into a profile link

[foxxie]

Hello!

I've searched for quite a while but didn't find anything that fits.
I'm using xthreads for different thread descriptions. [My forum is used for a rpg and the fields are for date, time, location of the scene.] Now I would like to add another field for the character names of the attending characters/users. Is there a way the user can put two and more usernames into a field (only one field, the names most likely seperated by comma or something) and those names turn into a normal link that redirects to the profile like with any other username in the forum?
Thanks in advance.