Half O' 3 is the "old man" of the 3.14 Series, specifically the Pi Tribe saga of the Secondary series. During the events of 3.14 - Brain Over Radiation, he has 3.14 deliver to him the Quartz Necklace so he can do something, but Strafe steals the necklace. 3.14 then trips over in Phazon, leaving Half O' 3 to care for him.

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