Heroes of the Storm trailers

There are numerous animated videos for Heroes of the Storm featuring Warcraft characters.

As these videos are set in the Heroes of the Storm Nexus they also feature characters that are not from the Warcraft universe.

Videos
Animated trailers for Warcraft Heroes: Animated trailer for the Alterac Pass : Unique animations as part of hero spotlights for Warcraft Heroes: Cinematic (featuring the Lich King as one of the characters): Other animated trailers centering on Warcraft characters:
 * (3min30sec to 3min36sec presumably showing Naxxramas)
 * (in a unique forest location 0min37sec to 0min43sec and 2min43sec to 2min50sec)

Note that many other videos not listed here that are not centering on Warcraft characters also feature Warcraft characters.