Blaine is the name of a character in
The Dark Tower Series by
Stephen King. If you have not read the books
The Waste Lands and
Wizard and Glass yet you should consider the rest of this a minor spoiler.
In The Waste Lands, Blaine is foreshadowed in a childrens book from 1942 called Charlie the Choo-Choo which turns out to be a cross-dimensional information leak between Roland's shattered world and John "Jake" Chambers' 1971 New York. The book can be described as Mike Mulligan and His Steam Shovel with an anthropomorphic train engine as the title character. Eventually Blaine is revealed as a senile, suicidal, psychotic, riddle-obsessed artificial intelligence with multiple personality disorder contained in a computer beneath the ruins of the post-apocalyptic city of Lud.