In Pokemon crystall Bill is the guy who makes the PC system and also likes rare Pokemon
Bill's grandfather lives in Bill's old house on Route 25 which is above Cerulean City.
In the Pokemon center in ecruteak city When you enter the ecruteak city Pokemon center bill will come down from upstairs then he will return to his house in goldenrod city
after you get the macine part and return it you go up to bill's house
There is not mention of anything being behind the hole in the wall of Bill's seaside house on Route 25 in Pokemon Crystal.
well on Pokemon Gold/Silver/Crystal it's Oddish.
I preference pokemon crystal
You get it from Bill in Goldenrod city (his house is south-west of the Game Corner), but you have to talk to him in the Ecruteak Pokemon Center in order for him to be there.
He lives somewhere in goldenrod city he will be at his home after seeing him in the olivine city Pokemon center (or its cianwood city)
goldenrod city and kanto by cerulean city(route 25)
There is no HM08 in Pokemon Crystal. Pokemon Crystal has only 7 HMs that are available to use.
I've heard one of them is a lickitung because he wants to see a Pokemon with a long tongue. Hope this helps!!
In Pokemon Crystal.