The suit is based upon the Spider-Man outfit from Incredible Hulks Annual #1, where it is donned by Ghost Spider, a Peter Parker from Earth-11638. In this reality, Peter is killed and later resurrected with the help of Dr. Banner, becoming the Ghost Spider.
The Spirit Spider Suit appears as a clothless white body with a spider symbol on the chest and a skull and blue flames for a head. Additionally, it comes with the Spirit Fire suit power. When activated, this ability sets Spider-Man's skull ablaze as well as his attacks, letting him spread the fires of hell to enemies that will take damage and be stunned by the blue flames.