Black Symbiotic Costume: The Venom symbiote granted Flash the following powers:
*Superhuman Strength
*Superhuman Speed
*Superhuman Stamina
*Superhuman Durability
*Superhuman Agility
*Superhuman Reflexes
*Accelerated Healing Factor
*Wall-Crawling
*ESP
*Immunity to Spider-Man's Spider-Sense
*Camouflage Capabilities
*Constituent-Matter Generation
*Constituent-Matter Manipulation
*Genetic Memory
*Night Vision
*Venom's Memory from previous hosts
Hell Mark: The Hell Mark bestowed upon the Venom symbiote by Mephisto marked Flash as a potential candidate to become a Hell-Lord during the Descent and granted him the ability to subjugate and control lesser demons, though powerful demons are able to resist this. When the symbiote realized the demon implanted into them by Daimon Hellstrom was slowly taking over, it passed the Hell Mark on to its clone and bonded it to Andrea Benton.
Demon: Flash was possessed by a demon through Daimon Hellstrom's attempt to turn the symbiote into one of his Monsters of Evil. The demon initially wanted to be released from Flash's body since possessing a person who bore the Hell Mark had been forbidden, but couldn't be exorcised due to the Hell Mark's presence. Flash theorized that the symbiote and demon were cooperating to overcome their respective handicaps , but the symbiote realized that the demon was slowly overcoming the Hell Mark's suppression and expelled it along with the Hell Mark into its clone.