5. Booster Gold(s) Rescue Brainiac
Multiple versions of Booster Gold enter the fray. Booster Golds oh boy. Okay, in order to understand the significance of this moment, you will need to have read the following series: 52, Booster Gold, Justice League International (vol 2), Futures End: Booster Gold, and Convergence: Booster Gold. So if you havent, ya know, read 10 years worth of comic books about Booster Gold, heres what ya need to know: the Pre-New 52 Booster Gold is the protector of the time stream (this Booster Gold shall hereby known as 52 Booster). Think Dr Who except American. When Flashpoint occurred, a new Booster Gold was created with the New 52 timeline (this Booster Gold shall hereby known as N52 Booster). Okay, so both of these versions of Booster meet upon Telos. Brainiac abducted both of them (along with 52 Boosters sister and son - Rip Hunter) trying to find the location vanishing point (a floating fortress that exists at the end of time, where time is catalogued). N52 Booster spilled the beans about it to Brainiac, and thats how Brainiac has been able to abduct different timelines. Meanwhile, 52 Booster has been bouncing around different timelines, and therefore, has contracted a bad case of temporal radiation poisoning: in short hes ageing really quickly. So N52 Booster, Rip Hunter, 52 Boosters sister, and Ted Korg the Blue Beetle take 52 Booster to the vanishing point where he is healed of his condition and transforms into Waverider a entity who is connected to all moments of time (Phew that was tiring to explain). Back to Convergence #8 N52 Booster and Waverider show up right as Telos stops Parallax. Waverider then says that the only person who can stop the destruction of the Multiverse is Brainiac. So Waverider uses his powers to access the Futures End timeline where Brainiac was trapped and frees him.