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>The reason why Blue no longer has his Raticate
>It's generally accepted that it died somehow. Some say Red killed it (see above WMG) while others say it was mortally wounded in a battle. Here's the real reason.
>Remember how Blue's Raticate was level 16, even though it evolves at level 20? A mysterious stranger gave Blue a special kind of Rare Candy that made Pokemon evolve quicker. Little did Blue know, this stranger was from Team Rocket and the "Rare Candy" was really one of their ideas to induce evolution. They were handing them out to various trainers to test the results and hopefully recruit new members when the trainers saw how well it worked. Ever trainer who used it ended up having the Pokemon they used it on die, which forced Team Rocket's scientists to go to their next ideas.
>As for Blue's Pidgeotto, it just grew up faster than others of its species.