Read more about In-Betweener at: Wikipedia

Official Site: Marvel

The In-Betweener is a fictional character that appears in comic books published by Marvel Comics. The character first appeared in Warlock #10 (Dec. 1974) and was created by Jim Starlin.

By the In-Betweener's own admission, he represents duality itself, specifically in respect to concepts such as good and evil; reason and emotion; truth and illusion; and life and death. The In-Betweener is also an agent of the conceptual beings Lord Chaos and Master Order, although his loyalty is usually to himself rather than to them. In addition to being an incarnation of balance and duality, the In-Betweener is possibly a metaphysical counterpart of Galactus.

The hero Adam Warlock is the first Terran meta-human to encounter the In-Betweener, and the entity reveals that it is destined to force Warlock to transform into his villainous future self the Magus. Warlock, however, was able to escape this fate with help from the Titan Thanos.

The In-Betweener then claims to be the power behind the plan to alter the fabric of reality orchestrated by the group of sorcerers known as the Creators, but secretly seeks to impose his own concept of balance upon the universe. After an encounter with the sorcerer Doctor Strange, the In-Betweener is imprisoned as punishment for rebelling against his masters.

In-Betweener has not been a contender in any CBUB matches.