Zakka was a Finnish mailswapper and modemtrader.
He left prime for Omega, before moving on to Spaceballs. He then changed his handle to Black Sheep and moved on to Alpha flight. He later changed it back to Zakka again. He left Rebels for Accession around the middle of 1993 (source: Chippy Town 1).
Swapper advert in R.A.W 2 (february 1992).