Mei first look video

Video clip showing a round using Hero Mei during the beta weekend stress test.

For more on Mei, check the following links:

Mei's abilities / stats

Compare Defense Heroes

Mei guide

Mei - Role Defense

Character abilities include the following:

• Endothermic Blaster - short range stream of frost that damages, slows and freezes enemies in place. Also able to switch to medium range mode shooting icicle projectiles.
• Cryo-Freeze - surrounds yourself with thick blocks of ice that enables self healing and ignores damage but disables movement and use of abilities.
• Ice Wall - creates huge ice wall that blocks line of sight, prevents movement and attacks
• Blizzard (Ultimate Ability) - deploys a drone that creates a blizzard which will do aoe damage, slow down enemies, and freeze opponents solid if they linger in the effected area.

Daopa's guide and personal take on this character:
Main task for defensive role character is to guard locations / objectives, create choke points and establish a front. 

Mei's hit points is currently set to 250 and a melee option is available which is a left punch attack.