You can find it at the top of the Tin Tower
you cant
rat
Crystal does not have Mewtwo. Instead it has Ho-oh after you beat the Pokemon league.
Go here:Pokemon_crystal_how_to_find_ho_ho
Go here:Pokemon_crystal_how_to_find_ho_ho
Ho-oh or Lugia is the strongest Pokemon in Crystal. Tyranitar would be third strongest.
That would be... Ho oh or lugia
You can get lugia, ho oh, entei, suicune and raikou
You can't find a Ho-ho in Pokemon Diamond. You have to migrate.
Ho-oh does not appear in Pokemon red, as Pokemon red is a first generation game that only features 151 Pokemon while Ho-oh appears in silver/gold/crystal, a second generation game.
Lugia Ho-oH Riakou Suicune Entei
You can find Ho-Oh at League Champion- Steven map.