Former teammate Justin Schultz praises Dumoulin as a reliable and versatile player. Known for his disciplined play and adept stick handling, Dumoulin excels in blocking passes and regaining possession. He also boasts an impressive passing success rate, facilitating offensive plays.
Off the ice, Dumoulin's championship experience makes him a valuable mentor for younger players. He has connections within the Kraken organization, including Ron Francis, who played a role in his early development.