Current global snapshot: Tier S, 53.15% win rate, 1.74% pick rate, 0.36% ban rate.
Dun is a tank who wins through timing and disruption, not damage charts. He is valuable because he can start fights, absorb pressure, and create enough chaos for carries to hit safely. The best Dun games feel simple: protect the wave, arrive first to objectives, force one clean engage, then peel if the enemy tries to counter-dive.