Slimeball

"Why does every Russian in this City call me that?"

--"Slimeball" to Niko

"Slimeball" is an unnamed minor character appered in GTA IV

Not appeared in any mission exept for one random encounter with [Ilyena Faustin]].

Because he is called "Slimeball" by everyone,so does Niko

Events in GTA IV:
There are three possible choices:

Kill "Slimeball" (Shoot him with a gun)

Beat him up (Beat him with hands)

Let him go.

If the player chooses to kill him,he gets a call from Ilyena Faustin that "another man in her daughter's life met a violent death,thank you for that"

If the player decides to beat him up,he still gets a friendly phone call from her that "Anna is upstairs in tears."When Niko says "I'm sorry",she says that "Do not be.The Slimeball has broke up with my daughter,and thank you."

If the player lets the "Slimeball" let go,this results in yet another phone call from Ilyena Faustin,that "her daughter has ran away,and now she is totally alone."