Jerico is a pigeon enthusiast living between the chapel and the northern bank of East Ardougne. He owns several pigeons, which he uses to communicate with the quarantined West Ardougne. If the player chooses to, he will eagerly engage them in conversation about pigeons.
He has several friends in Ardougne, such as Edmond, Omart and Kilron. When Elena wanted to study the plague, he helped the adventurer who rescued her to sneak over the wall in order to retrieve her distillator, which had been stolen by the mourners. He distracted the mourners watching the gate by releasing several of his pigeons, allowing the adventurer to climb over and into the quarantined city.
- ^ Jerico, "Biohazard", RuneScape. "My messenger pigeons help me communicate with friends over the wall."
- ^ Elena, "Biohazard", RuneScape. "My father's friend Jerico is in communication with West Ardougne."
- ^ Jerico, "Biohazard", RuneScape. "I have arranged for two friends to aid you with a rope ladder. Omart is waiting for you at the south end of the wall."