Im not sure if this was done before, but imma do it
Apokolips having decided that they are bored with the DC Universe, decides to move to the Negative Zone thru a portal of Darkseid' s creation. There, they hope to conquer this dimension. However they are stopped by the newly appointed guardian of the untamed realm, The Sentry. A brief clash ensues, wreaking havoc upon much of the large universe. Realizing that destroying the universe would cause the loss of a realm to both Darkseid and The Sentry, they instead both decide to fight in an arena setting.
So 616 Merged Sentry, Pre-Flashpoint Emanation Darkseid,
-Both sides have a surface level understanding of each others powers
-Both start 100m away from each other
-Both are in-character for their versions
-Rumble rules
Let the matchup begin!