As you can see, I've added some suitable modifications. The giant has torn loose a large dwarf door, which has been attached on top of his shoulders with chains and wooden constructs. On top of the door are numerous snotlings that have tagged along for the ride while hurling rocks and arrows at the enemy. The giant is also sporting some dwarf loot; in particular a mining pick, a barrel of ale, a statue attached to a club, and plenty of shields strapped onto his arms. I've also added a few pieces to the base to make it more unique and befitting the theme.
I'm contemplating whether or not to add arrows and blood to him, but that would probably mean I'd do the same to the entire army, which makes it a decision for another day. So for now, here's how the big fella will look.