Marvel Chronology Project

Starbrand (Kevin Conner) – also in flashback to when he was killed by a Beyonder
Nightmask (Adam Blackveil) – also in flashback to when he regressed out of existence while tracking the Beyonders
Beyonder – in flashback only
Odinson – in flashback only
Hyperion – in flashback only

Blizzard (Donnie Gill) – controlled for a time by Entropy
Nitro (Robert Hunter) – controlled for a time by Explosion
Graviton (Franklin Hall) – controlled for a time by Gravitation

Eternity
Explosion – one of Eternity’s Children
Gravitation- one of Eternity’s Children
Entropy – one of Eternity’s Children
blind man (Gustav Brandt, a.k.a. Libra)

Sunspot (Roberto DaCosta), Supreme Leader of A.I.M. – the mystery man who has been watching Kevin and Adam via camera drone C-04
S.H.I.E.L.D. Director Maria Hill

Mar-Sohn, the Nightmask of Kree-Pama
Joras-Kyl, the Cipher of Kree-Pama
Trrunk, a Cotati who is the Justice of Kree-Pama

Imani Greene
Tri
Cedric
Kenny Kong
Shelley Conklin
Krysta

The In-Betweener (Brandt’s partner)

Just for clarification- is it THE Beyonder or A Beyonder that appears in the flashback?

Michael wrote:Just for clarification- is it THE Beyonder or A Beyonder that appears in the flashback?

It is A Beyonder, one of the Beyonders who were destroying the multiverse. This Beyonder stabbed a blade through Starbrand's body, mortally wounding him and causing him to lose control of his cosmic energy. Starbrand then exploded, killing that Beyonder.

As for THE Beyonder (the "child unit" who was responsible for the Secret Wars), he fused with the Beyond energies contained within Owen Reece from Earth-616 to become a Cosmic Cube which later evolved into Kosmos. This Beyonder briefly reappeared after Owen went evil for a time but was soon restored to her Kosmos self. Of course, Kosmos later became the insane being known as the Maker and died when her mortal body was killed by the Annihilation Wave. What happened to her "Beyonder essence" has never been revealed.