His AC may be a little high, but I'm more concerned by his Charisma. Sure, a sleeping baby might have a high Charisma, but eventually, it's going to wake up, it's going to make noise, it's going to make messes and need diapers changed. I'd give it a major CHA penalty for that...
Some people don't like babies, which is fair enough, but apparently we're genetically supposed to go "awwwww, that's cute." Because babies can't do anything for themselves and adults have to do everything. Besides, kids parents probably made it, and s/he'd be the cutest thing they ever saw.
Ahhh, the charisma issue. Looks like the character sheet is using the old AD&D stat system, which would probably put the AC at 6 from a size modifier. Don't wanna check the rules for sure. The problem is, D&D just had charisma, which supposedly had physical beauty aspects with it...leading to the oddness of low charisma having odious personal habits crowd. Most used a secondary stat, Comeliness for how pretty someone was...making charisma really an idea of presence, or, the ability to lead or get things done. How hard is it for a screaming baby to get things done? Yeah, I'd say an 18 charisma sums it up.