D. Va guide

D. Va - Role Tank

Character abilities include the following:

• Fusion Cannons - short range cannons that deal high damage with no reload, while active movement is slowed.
• Boosters - launches the mech into the air carrying her forward, can be used to knock enemies back on hit.
• Defense Matrix - a projected targeting array that shoots incoming projectiles out of the air.
• Self-Destruct - ejects from mech and sets power reactor to explode dealing massive aoe damage to nearby enemies.

Daopa's guide and personal take on this character:
Main task for tank role character is to protect your team, disrupt enemies and lead the charge. 

D. Va's hit points is currently set to 500 in mech and 150 out of mech.