DP090 is the 90th ep[isode of DP it first aired in Japan on Dec 24th 2007. In this episode Dawn's Piplup evolves when it is in battle with a Taillow who belongs To Diego however what happens when Prinplup needs to get it's check-up at the Pokemon Center Humans- Brock Ash Dawn Diego Jessie James Major Events James catches a Scyther Dawn's Piplup Evolves Into Prinplup Dawn's Ambipom learns Fling Pokemon Pikachu[Ash's] Sudoowodo[Brock's] Ambipom[Dawn's] Prinplup[Dawn's] Buneary[Dawn's] Taillow[Diego's] Scyther[James's] Carnivine[James's] Dustox[Jessie's] Jolteon Scizor Electrode Magcargo Sceptile Grovyle Ludicolo Shiftry