.

Elijah Wood took him out at a young age before he could become a full fledge kill.

Well actually his mom dropped him off a cliff if I recall correctly.

See The Good Son

Kevin McCallister is Jigsaw

Upon being taken under the wing of Old Man Marley AKA "The South Bend Shovel Slayer," Kevin's modus operandi was established. He was more careful than Marley, more deft at his craft. Where Marley would mummify his victims in salt, Kevin Kevin preferred the use of acid, a clean end. He did not need the reminders or trophies that formed a crutch for Marley. No, Kevin knew that his next target lay right around the corner.

I still maintain that Kevin's parents were plotting to have Kevin murdered while they were on vacation.