The Collector is a intergalatic buyer who appears in the MCU in the Guardians of the Galaxy vol 1, Thor the Dark world and Infinity war.
Lady sif and volstagg gave the Collector the reality stone (for safe keeping) and the guardians almost gave away the power stone to him realizing how powerful it is.
In infinity war Thanos takes the reality stone from the collector giving him three infinity stones.
So my question is what if the Collector collected all six infinity stones ?
Would he use it to collect worlds as his own ?
Or a display it with the rest of his collection ?
(Comment below)