Puukko-Allu aka Panama Rayo (s. 1972) is a finnish rapper from Kaukovainio, Oulu.
Allu's MySpace page includes a few of his songs, ”Näytä keskisormea”, ”90250”, ”Myrkkyä Suomeen” and ”Pöhinää pessään” for example. He is also a member of the band K.G.B (Kaukovainio Ghetto Boys). Puukko-Allu has done cooperation with Julma-Henri and many other artists. Puukko-Allu called himself Sere earlier, but he had to change his name when Seremoniamestari began using that name.