Pidgeot
Caught as a Pidgey; Found on Route 1
Level 68
Female
Nature: Docile
Characteristic: Good Endurance
Move Set: Fly, Wing Attack, Air Slash, Hurricane
One of the very first pokemon Atem actually caught on his very own. Their bond became strong from the beginning; Pidgey often liking to stay outside of her pokeball and ride on Atem's shoulder or perch on his arm. The duo have been pretty inseparable since the early days. Now sometimes she even likes to surprise Atem with random rides on her back from time to time.
Aerodactyl
Revived from Old Amber found at the Ruins of Alph
Level 58
Male
Nature: Hasty
Characteristic: Hates To Lose
Move Set: Ancient Power, Take Down, Sky Drop, Iron Head
It was Atem's surprise that he found the Old Amber while training his pokemon at the Ruins. Once this pokemon was revived, it immediately started wreaking havoc on the scientists who had helped Atem bring it back. It was with a very long and hard fight that the trainer was finally able to bring it down and capture it.
Skarmory
Found at Stark Mountain
Level 54
Male
Nature: Sassy
Characteristic: Strong Willed
Move Set: Air Cutter, Steel Wing, Air Slash, Night Slash
This Skarmory went into battle with Atem when he was trekking through the mountain in order to try and catch a glimpse of one of the legendary pokemon said to lie within. During battle the bird got so haughty and upset that one of its gusts actually kicked up enough wind to blow Atem backwards. Unfortunately it was back into a lava pit. With quick action and thinking the bird threw off the rest of the battle, diving into the pit to save him with only moments to spare. He's stayed with Atem ever since, trying to make up for his accidental misdeed.