Hey, welcome to Meta 
By Channels, do you mean you want to see titles within a chat channel?
We do show titles by usernames by default in topics (you can see mine next to my name in this post) — but I don’t think that applies to chat at the moment. If you want to show the full name next to the username (also like what you’ll see on my post!), you’ll need to enable the display names on posts setting.