Pepperface is running silent. His deck is configured: Attack 3, Sleaze 5, Data Processing 5, Firewall 6 (+1 from Encryption).
Pepperface can automatically sense unhidden icons within 100 meters, but he makes a Matrix Perception test to find any hidden ones nearby.
I took the liberty of rolling a Matrix Perception test, but I forgot the -2 for running silent. Would you rather omit the last two rolls (bringing his hits down to 4) or have me re-roll entirely?
Computer 5 + Intuition 4 [Data Processing 5] = (9d6.hits(5)=5)As for Pepperface's Matrix handle... well, it's Pepperface. As far as what his icon looks like, I describe it pretty extensively in my original post of the character sheet, but for the short version just picture Slenderman with a blur of pixellated "snow" where its face should be.
(For those of you unfamiliar with Slenderman, I apologize for the nightmares that Google Image search is going to give you.)
Normally he wouldn't run around broadcasting such a distinctive handle/icon, but for the sake of keeping things interesting let's say he forgot to pick something more inconspicuous amidst all the chaos.