McLelland was a operative belonging to the Merovingians. He appears in The Matrix Online.
Chapter 7.3.3-7.3.4[]
He sent Malphas and operatives to crack a Zion email system, where they then transmitted the kill-code into Zion's network.
Zion found and captured the undercover Merovingian crew who had relayed the kill-code to a spy inside Zion --apparently someone on The Oracle's security detail. Questioning of one the captured crew, McLelland, helped Zion identify the spy himself--an operative named Zaelti--but the kill-code was not found in his possession.