I want a shiny Heatran so I'm soft resetting again and again but every time its a girl and that makes me afraid because the page says it has 50% chance to be boy. Did the game set the Pokémon so I'm actually seeing the same Pokémon again and again? Please help.
SR-ing changes not only the Gender of the Pokemon, but also its nature and its IVs as well.
Keep trying.
Source: Personal experience.