After leaving the dragon ball multiverse, he re-entered the marvel comic universe, as he arrived he remembered that the fantastic 4 had once opened a portal to the negative zone home to strong entities. Heading to the Baxter building, crashing through the floor to ceiling windows, finding reed in his living room.
Before he could say or do anything, Zara grabbed his head and used an old ki based mind reading ability shown by goku during the the early stages of dragon ball Z.
Gaining the info he needs, he proceeds downwards entering the labs of the Baxter building.
Finding the portal device and touching it, which allows him to feel the dimensional energy it has interacted with in the past.
Then he vanished.
He arrived in the Negative Zone first. Before he could look around and explore Annihilus himself attacked.
Zar broke him in seconds, didn't bother giving him a chance to talk shit and act pompous.
For good measure he went full power in base which is approximately lower multiversal ( 4 large universes) and shot a blood red super nova attack and destroying 80% of all life with in the negative zone, along side any planets and structures in that dimension.
Teleporting back to earth,
Galactus sensed the disturbance and descended, hunger given form.
The Devourer of Worlds unleashed cosmic force enough to extinguish stars.
Zar flew into space, met it barehanded.
Each blast forced his base body to refine ki into something sharper than cosmic radiation.
He climbed Galactus like a mountain, shattering armor plates with elbows and knees, and drove his fist into the Devourer's core an pushed his ki into it and fed the devourer, understanding his role in the bigger picture .
Galactus basically fell into a food coma
Zar absorbed the fight as a lesson.
Cosmic power was vast but easily taken away inefficient.
Thor challenged him next.
Zar was annoyed by this guy at this point so he shattered Mjolnir with brutal raw strength.
Not caring about the cosmic lighting entity sealed with in.. He simply ignored it and moved on to the next adventure.
Thor stood in the void of space, shocked and confused at what just happened, his hammer now a bunch of fragments floating around in space.
All of this which transpired, was observed by shield, world governments and affiliated organizations hydra as well.
The decided to come up with a containment plan arrogants being their driving force, refusing the facts layed bare.
End of the chapter