What trainer has a Porygon in Pokemon platinum?

Go to Veilstone City next to the Veilstone Store there are Two houses go to the one on the Far right go in and talk to the Guy he says I have a Pokemon want it or somethin like that and if you have one empty slot in your PARTY say yes if you don't he tells you GET LOST. J/K hey tells you to get one Pokemon in the PC and go back and select YES and he gives it to you it is lv.25 and knows the moves psybeam,agility,recover,and one other

HOPE IT HELPED XD