We all know that it's mentioned in the movie that the villainous Khan had a wife who died. But originally, it went further than that: he had an adorable baby son, too. We can cut Khan some slack for being so wrathful, then, since as any new parent can attest, babies can be really stressful. Especially since Khan was clearly breastfeeding.
Though we're not sure how, since genetically-engineered supermen apparently have no nipples.
Craziest of all, the film's finale almost involved the baby getting blown up. As Khan is all but beaten, he activates the Genesis device, which creates a new planet in a huge explosion. Unfortunately, the bright lights of the device are basically a Fisher Price toy to little Khan Jr., who crawls towards it. The device explodes, destroying the ship, the baby, and the heart of every Trekkie who mainly loved the show for never brutally killing infants.
That scene was actually shot, but the filmmakers eventually came to their senses and deleted it so hard that only a few stills remain.
The "Scotty with Burn-A-Baby Action Play Set" toy was cancelled, too.