How exactly was Doc Scratch created, and what makes him tied so close to Lord English's legacy with the recent upd8?

Doc Scratch was ectobiologically created using Lil Cal and Vriska’s cueball. Lil Cal is LE’s entrance ticket to new universes since LE is located inside him.
So for a Betty Crocker metaphor. Essentially, Lil Cal is a pack of gushers, Doc Scratch is the actual gusher, and LE is the delicious juices inside that once released assault your taste buds with its sweat artificial wrath.