OK go with me on this.
Ok, a lich is a mage that breaks a part of their soul into an item. When that item is destroyed, their soul comes out, and is usually very deadly and destructive, as it is the cusp of their power.
This item is called a Phylactery.
When a person spends too much time in direct contact of a phylactery, particularly the part where the soul was stored, they become enthralled by it and bent to the Soul’s will power, if they themselves are not of strong enough mind.
So is Caliborn/Lord English. My theory is that Lord English is the pure manifestation of Caliborn’s soul, combined with the unmitigated power he obtained from his session.
My reasoning: When Doc Scratch is broken, Lord English arises.
Also: When Jack Noir stared into Lil Cal’s eyes for long enough, he went mad, obtained Lord English like power, and began killing things.
Phylacteries also cannot be copied, and any attempt will fail.
Hence why there can be only 1 Lil Cal
IN EVERY UNIVERSE.
Caliborn being a lord of time can most likely send Lil Cal to any universe’s timeline, ensuring his arrival so that when his phylactery is broken, his soul enters that universe and destroys it.
I know this because: I have spent my entire DND career researching old mythology of Liches.
He is a Lich.
And the Ju-Ju breaker is a phylactery destroyer.
And because Lord English is in fact Caliborn’s soul, Dirk, Prince of Heart, can in theory destroy it.
Dave with the Caledfwlch, a blade that has the cue-ball, yet another fragment of caliborn’s soul, could in theory destroy lil cal, and Kill Caliborn.
Also means that Gamzee, who spent literally HOURS of time staring at Lil Cal’s eyes is probably a thrall.
Which would explain why when gamzee spoke to terezi at first he said “No, you’re hurting me” and seemed not to remember anything.
And it also explains why he gave one, roar of a honk.
Lord English gives the EXACT SAME HONK upon arrival.
Ergo: The Vast Honk is a reference to when the phylactery is broken and Lord English appears.
That is my theory.