Thunderbolts #4: Review

Kobik's reaction to the topic of jamming is because she is doing it to keep Captain America and Winter Soldier apart, as seen in CA: Steve Rogers #4. This is connected to the revelation in CA:SR#2 that it was Kobik that did Red Skull's bidding by making Cap a Hydra supporter. Is she still working for Skull? Or is she just trying to keep her hero Bucky from finding out what she did to his friend?

Squadron Supreme has been the name of several teams from different alternate realities with members with similar names and powers, usually modelled on DC characters.
Technically the 1st incarnation was the villainous Squadron Sinister of the main Marvel timeline (Earth-616) in Avengers #69-70 with a Dr Spectrum, Hyperion, Nighthawk and Whizzer.
The heroic Earth-712 team was introduced in Av#84, with more members. After more appearances and the introduction of more members including Power Princess they got their own 12-issue limited series. Then a Graphic left many members, including Nighthawk, dead and some stranded on Earth-616. More adventures of these followed until the Avengers/Squadron Supreme Annual returned them to their own universe, which they set to rights in the 1-shot SS: New World Order. And they set it even more to rights when the Exiles visited them in that series.
Another timeline, Earth-31916, housed the SS team that starred in the Supreme Power series. The usual suspects appear like Dr Spectrum, Hyperion and Nighthawk, but with many differences including in some cases super-ids like Blur and Princess Zarda. they crossed over into the Ultimate Universe in the Ultimate Power miniseries, leaving Zarda there. Their Earth was destroyed by the Cabal in New Avengers (2013) #24.

This Squadron Supreme consists of individuals from several realities destroyed by the gradual end of the multiverse that led to Secret Wars:-
Blur from the DP7 team of the 1986 New Universe (not the Blur from Supreme Power).
Dr Spectrum of the SS-analogue the Great Society who were destroyed with their Earth by the Illuminati in NAv(2013)#19-20. She survived because she travelled to Marvel Earth.
Hyperion from yet another Earth with a Squadron Supreme. It's universe was destroyed in Av(2013)#4 but he survived and eventually came to the Marvel Universe where he joined the Avengers.
Nighthawk from Earth-31916 the Supreme Power universe.
Thundra had never been a member of a Squadron. She has a complicated history involving an alternate future, but prior to Secret Wars she ennded up co-ruling the extra-dimensional Polemachus with Arkon. This survived into Secret Wars' Battleworld as part of the Weirdworld domain. Which in turn survived in the Bermuda Triangle of the post-SW Earth. Thundra came from there and partnered up with Hyperion.
(There was a different villainous Squadron Sinister from a different Earth preserved in Battleworld. Warrior Woman came from there and joined this Squadron Supreme pretending to be Power Princess from Earth-712. Then the real Power Princess turned up, and this is part of an ongoing plotline in the current SS series. Presumably they were both left out of this app to save confusion.)

The evil Hyperion that Moonstone remembers is from yet another Earth which he destroyed in an attempt to rule it. He became part of a time-travelling Weapon X team which became involved in the Exiles series. He later found himself on Marvel Earth and was inducted into the Thunderbolts. But he tried to kill them until *they* killed *him*.