To make a character or an animation more appealing you need to look for ways to make it more alive, more “organic” by adding more details, very often a simple reaction to a main action would be sufficient

When robots and mechs are usually characterized by their stiffness, the animator here added a nice little touch by making Overwatch D.Va’s mech react to her fun idle (emote) and moving as Hana goes side to side stuffing her face with crips and fizzy drink alternatively while focused playing a holographic shmup.

The animation and Mech are definitely more alive and we still buy it is a mechanical object that could spring up to action anytime.

Great work Blizzard!

[youtube]https://www.youtube.com/watch?v=4nGPiq1O1pE[/youtube]

Related posts:
So you want to be a rigger huh (v02)
Ears motion