Lost 2 Pokemon on Pokemon X, Where could they be?

//ads -- adsterra.com -- native banner
?>
I have recently started up my Nintendo 2DS after about a month of inactivity. I knew for a fact that I had the following 2 pokemon:
- Shiny Gengar (Event Pokemon),
- Vivillon (Event Pokemon, Pokeball pattern)
Is there any place I could have left these pokemon? I have already checked the daycare on route 7 and they aren't there. Is there anywhere else?
Pictures about "Lost 2 Pokemon on Pokemon X, Where could they be?"



Does X and Y have all Pokémon?
Like with previous games in the series, certain Pok\xe9mon are only obtainable in either X or Y, keeping players encouraged to trade with others in order to obtain all Pok\xe9mon.How do you meet the punk boss in Pokemon X?
Keep going west until you reach a Punk Girl and a trash can. Go north. If you have learned the skating tricks from the skaters in Lumiose City (see the "Skate Tricks" section at the top of the page) The Punk Guy will send you to talk to Boss. He'll teach you the cosmic flip.How many X Pokémon are there?
72 new Pok\xe9mon were introduced for X and Y, bringing the known total from 649 to 721. The first Pok\xe9mon to be revealed were Chespin, Fennekin, Froakie, Xerneas, and Yveltal on January 8, 2013.How do you get through the lost hotel in Pokemon X?
To pass through, you must learn four Roller Skates moves from different people in Lumiose City. They are: Backflip: Talk to the skater near a tree outside of Hotel Richissime on North Boulevard. Parallel Swizzle: Talk to the skater inside a white office building on the west side of South Boulevard.Top 5 Things you may NOT know about in Pokémon X and Y!
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: mentatdgt, Pixabay, Anton, Vincent M.A. Janssen