OT-3PO was a 3PO-series protocol droid who worked in a flophouse located in Gnawer's Roost in the sub-levels of Coruscant. On one occasion, members of the Alderaanian Resistance came by in search of the technician Pavel Trenol, who was staying in a room there. OT-3PO demanded a fee in return for telling them what room Trenol was staying in.