Many people wonder, is my pokemon hacked? Well here is a guide with basic and simple principles that will help you decide for yourself.
Obvious signs of a hack...
Max Contest Stats without Sheen.
Irregular moves like Hypnois on a Garchomp.
Abilities not availible to that pokemon such as a Spiritomb with Wondergaurd.
A pokemon with Key Items like "Oak's Letter".
A pokemon with every ribbon possible, ribbons like Classic Ribbon and such...
Legendary pokemon that say "Apparently hatched on Route "insert route here"."
Arceus and Shaymin are hacked at the moment.
A Metagross cannot be gained under it's evolution level.
Darkrai are only availible in Cherish Balls now, otherwise they are hacked.
Less than obvious signs of hacking....
Starters and pokemon like Lucario are not availible in Masterballs. *2nd Generation Starters from Colluseum are barred, any other 2nd generation starters not from Colluseum are not excluded*
Currently only Darkrai comes in Cherish Balls, any others are hacked.
A Pokesav pokemon has spaces after it's name though it is easily renamed if the hacker is smarter.
A pokemon with the name "ASH" may be hacked by an unamed pokemon program.
Subtle signs of hacking....
A little trickier way to tell is to know what levels pokemon appear at in the wild since you can't get a level 82 Alakazam in the Wild.
Pokemon like Palkia or Dialga caught anywhere other than their original place are hacked.
Any 4th Generation poke, such as Garchomp that say "Arrived from Hoenn" or any other place different from Sinnoh are hacked.
Pokemon with info like the following are hacked. "Caught at Mystery Zone at Level 0".
Slight differences in OT names or wrong OTs. *Only for set OT pokemon like Poketopia Pikachu*
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This is just what I thought off the top of my head. This guide will become better from contributions so feel free to tell me stuff I missed.
Yeah, that's a good point though...another one is that my Garchomp has max sheen in everything 
Linear Mode
