Dann of Thursday is the name of the mysterious and powerful Armor piloted by the protagonist Van in the anime series Gun x Sword. As a sentient mecha, Dann plays a central role in Van's quest for revenge against the Claw Man, assisting him in battles with its unique sword-based combat abilities. Throughout the series, Dann's connection to Van deepens, symbolizing Van's resolve and the burden of his past. Dann's imposing presence and loyalty make it a key element in the story's progression.