Ricardo Ross is a member of the Tiger Youth.
In 150,084 CMT, Ricardo Ross was one of the Rhadanian rebels who Sinjon Wol asked to join the Tiger Youth to overthrow Gaon Kug's corrupt regime. Sinjon asked Ricardo to meet up with the other rebels in the underground catacombs near the palace and to bring as many explosives as possible. Ricardo did as Sinjon said and met up with the others with explosives at nightfall. He helped to connect their explosives together with a flammable putty and used grappling hooks to climb to the underneath of the palace, which was above them on the roof of the cavern, and attach their bombs to it.
Once the bombs were detonated, Ricardo followed Sinjon by climbing up the debris into the bottom of the palace. Inside, Sinjon instructed Ricardo to secure the palace entrances with Richard Ross and Akot Deng Kon. Ricardo left for the entrances and was later seen helping Richard, Akot, and Fig Newton free prisoners of war from the palace dungeons.