"When Ampharos Mega Evolves into Mega Ampharos, its head and tail are covered with white fur in this new, gallant appearance. It increases the amount of electrical energy within itself, the red orbs on its body and fur emit a strong light."
Ampharos first appeared in B2W2-057 when Lexi visited the Flocessy Ranch. While there, she came into contact with an unruly Ampharos that the Ranchers had issues maintaining. They decided to release her, but, after watching Lexi battle against one of the Ranchers, she wanted to join Lexi. She did so, and then stayed with Lexi up until she was to head to Kalos, where she was left with Hayley.
Ampharos is quite a temperamental Pokémon, who loses her temper easily but also appears to be very remorseful when it does. She has, however, been shown to have a caring side, although it isn't shown often.
Ampharos gives off so much light that it can be seen even from space. Her tail shines bright and strong and is often used as a guiding light.