Yes, it's Ziddy, again.

1. My chatroom nickname is 99

2. The numbers he lists, trying to guess my name, are other people called as numbers.

Ehnrgiez (5:46 PM): ANGRY, RABID TREE FROGS ARE CURRENTLY ATTACKING THE SOUTHERN HEMISPHERE
Him: Thats noce.
Him: nice.
Ehnrgiez (6:02 PM): Yes.
Ehnrgiez (6:02 PM): It is very pleasing to those who live on Saturn.
Him: Who the hell are you.
Ehnrgiez (6:03 PM): Um.
Ehnrgiez (6:03 PM): I forgot...
Ehnrgiez (6:03 PM): A number, I believe, is my name.
Ehnrgiez (6:03 PM): WHO AM I
Him: 34?
Him: 16?
Him: 18?
Him: 24?
Him: 101?
Ehnrgiez (6:04 PM): Nope, nope, nope, nope, nope.
Ehnrgiez (6:04 PM): *sad*
Him: *grins at 99*
Him: Gee, I have no clue.
Ehnrgiez (6:05 PM): EEEEEEEE
Ehnrgiez (6:05 PM): *dies* It's my font, huh?
Him: Nah, the sense.
Ehnrgiez (6:07 PM): The sense?
Ehnrgiez (6:07 PM): My sense?
Ehnrgiez (6:07 PM): I dun got no sense.
Him: Noticed.
Him: But I mean your soul and such.
Ehnrgiez (6:07 PM): I lost my sense 688,948,839,098 years ago.
Ehnrgiez (6:07 PM): Ohhhh, my soul.
Ehnrgiez (6:07 PM): Too late for that old thing.
Ehnrgiez (6:08 PM): Sold it to the devil 284,948,290,938,940 years ago.