Just a Pebble?

Gray's movement and footwork even on this ship with uneven ground was one of grace and elegance. He moved with a kind of graceful precision only ever seen in the most seasoned of warriors. 

It made the two guards who were watching look on in shock. Both of them were warriors themselves. However, they had to admit that even they had never seen such a movement.

Gray's body was young and his muscles were far from being developed. However, berserker made up for the difference in muscle density, strengthening him and fleshing out the substance of his mind's purpose in his body.

There was no move performed that was a waste of purpose and energy. 

There was no excessive movement, neither was there too little.

Gray's grip on his ability was still lacking but his will, trained from thousands of battles was the propelling force to the slaughter he ensured.