List of Pokemon in Stone and Marble

Mega Evolutions

 * A grandfather clock might be Noctowl's mega evolution.
 * Luxray's mega will be Electric/Dark
 * Mega Rapidash will have an elegant look and it will be a pegasus with levitate.
 * Mega Bisharp will be a sort of a samurai

New Pokemon

 * A monarch butterfly will be Psychic/Bug instead of your usual Flying/Bug but it knows levitate.
 * An asteroid will evolve into a comet. It will be Fire/Ice
 * There are two angels and they're exclusive. The good angel is pure Psychic and it's avaliable in the Marble version. The other one is a evil angel and it's Psychic/Dark. It's only avaliable in the Stone version.
 * In the Stone version you get a star-nosed mole. It's cute and adorable then it evolves into a badass. It’s pure Ground.
 * In the Marble verison, you get a pink fairy armadillo and it's Fairy/Ground
 * A Solenodon will be a Rattata expy and it will be Normal/Poison
 * A sylph humanoid like pokemon made from clouds. It’s fairy/flying
 * To evolve a rock type Eevee you need to have a rock type pokemon in your party. To have a ground type Eevee, you need to level up while knowing Sand Attack.
 * Puesdo Legendary will be a Dracolich and it's Dragon/Ghost. The second one is a Komodo Dragon and it's Poison/Dragon
 * A earthworm will be Ground/Bug
 * A dolphin will be pure Water
 * A Beelzebub will be Bug/Dark
 * This cat pokemon is a Grimalkin. It's pure Dark and it's always female
 * A skeleton (A dry bones expy) is Ghost/Rock
 * A mad hatter expy is Poison/Psychic