Who Is Phoen!x?

Woke up this morning and found this conversation on my computer:

[04:21] Becca: who all is here??
[04:21] *** Auto-response sent to Group Conversation: I am currently away from the computer.
[04:22] Becca: who is Phoen!x?
[04:22] *** krivasliva has left the conversation.
[04:22] *** Yabita kun has left the conversation.
[04:24] *** Becca has left the conversation.

Being unable to contain my curiousity, I clicked on Info button and saw:

joe_oppegaard

My Stats Name Undisclosed Age Undisclosed Gender Undisclosed Marital Status Undisclosed Location Undisclosed

You can plainly see how helpful that was. My question is, who is Joe Oppegaard? And who is Becca? How did I get invited to a group chat without being on one of these people's contact list? Or, am I on their contact list? Why?

If only my messenger wasn't set to auto-respond with an away message, I might have had the entire conversation on my computer when I woke up.
Wouldn't THAT be fun.