Alex

Alex (アレックス) is a horse belonging to Carissa, introduced in Shinyaku Toaru Majutsu no Index.

Appearance
Alex is described as a muscular horse, fully outfitted with reins and armor.

Personality
According to the female knight, Alex is apparently known for only growing attached to pure maidens, though not to the extent of in legend.

Background
Alex was raised as a royal horse, belonging the Second Princess Carissa. While Carissa was imprisoned, she ordered the Female Knight to take care of Alex. He normally only got to walk around the Tower of London's courtyard.

Coronzon Arc
Alex was ridden by the Female Knight during the events surrounding the Crowley's Hazard invasion of London and was involved in the battle between the defenders of the royal family and the reproduced Golden Dawn on the roads between London and Edinburgh.

Abilities
Alex was trained as a military horse, with several different spells used in the process of raising him for official duties, such that running around a 2km lawn won't be enough to exhaust him. He is also equipped with special rubber horseshoes for urban terrain and his mobility rivals that of a motorcycle.