Appearing in "To Hold Back a Black Hole"
Featured Characters:
- Secret Avengers
- Agent Venom (Flash Thompson)
- Ant-Man/Black Ant (Eric O'Grady) (First appearance as Black Ant) (Revealed to be a Life-Model Decoy) (Leaves Team)
Black Widow (Natasha Romanoff) 
- Captain Britain (Brian Braddock)
- Hank Pym
- Hawkeye (Clint Barton)
- Valkyrie (Brunnhilde)
- Beast (Hank McCoy) (Appears on a Computer Screen, TV or Hologram Only)
- Human Torch (Jim Hammond) (Appears on a Computer Screen, TV or Hologram Only)
Supporting Characters:
Villains:
- Masters of Evil
- Black Talon (Sam Barone)
- Brothers Gimm
- Carrion (William Allen)
- Constrictor (Frank Schlichting)
- Crossfire (William Cross)
- Diablo (Esteban Corazón de Ablo)
- Griffin (John Horton)
- Killer Shrike (Simon Maddicks)
- Lady Stilt-Man
- Lascivious (Davida DeVito)
- Letha (Hellen Feliciano)
- Madcap
- Pink Pearl (Pearl Gross)
- Squid (Donald Callahan)
- Vengeance
- Whiplash (Anton Vanko)
Other Characters:
- Parvez
- Descendants (Behind the scenes)
- Father (Voice only)
- Meggan (Appears on a Computer Screen, TV or Hologram Only)
- Future Foundation (Mentioned)
- Mr. Fantastic (Reed Richards) (Mentioned)
Locations:
Items:
- Hawkeye's Bow & Trick Arrows
- Black Widow's Gauntlets
- Venom Symbiote
- Dragonfang
- Ant-Man's Helmet
- Serpent Crown
- Stilt-Man Suit
- Crown of Thorns
- Crown of Wolves
Vehicles:
Synopsis for "To Hold Back a Black Hole"
- Synopsis not yet written
Solicit Synopsis
• The Abyss spreads. The new Masters of Evil being their invasion.
• A traitor amidst the Avengers revealed. A friendship forever shattered. An Avenger quits.
• A shocking death that will destroy the team.