Xander/Zenkichi is Emily's date appearing in Caterpie's Big Dilemma, as voiced by Rebecca Honig.
- Being the boyfriend of Emily, he knows how to reside with his scientist, Dr. Gordon. He has a Caterpie, then Metapod, finally Butterfree who can grow at enormous sizes. He would kneel down to kiss Emily's hand.
- He is a 8-year-old with green hair and blue eyes and wears a yellow and orange short sleeved shirt, blue jeans with a white diaper inside of them and orange shoes.