Sacrosanct
Legend
So...controlling an NPC's mind, either to remove them from the battle entirely or to add them to your forces, is not "controlling." Okay. That's not really the definition I'd use, and it's not really consistent with 4e (where the Wizard, a Controller, eventually got an entire subclass built around "puppeting" enemies and making them attack their allies...)
yeah, if you could do that in most encounters. But charm person doesn't do that. After you charmed your target, you are doing absolutely zero control over any enemies you happen to run into from that point on. You're not changing the environment to affect their movement, you're not forcing or coercing them to do anything---nada. So if you aren't doing anything to control the environment or the enemies, I'm hard pressed to call that a controller. The only thing you're doing is throwing another body at them.
A controller does things like grease, hold person, wall of X, sleep, evard tentacles, stone to mud, etc. Charming a henchmen in town and using that henchmen as a meat shield and protector for you during later encounters isn't controlling those later encounters at all.
Literary characters rarely, if ever, correspond nicely to D&D classes. Conan, for example, had to have ungodly stats and, IIRC, a mishmash of class features. Aragorn is a "Ranger," yet he fights with a two-handed sword and is clearly a leader of men (implying high Str and Cha) and, to the best of my knowledge, never once uses a bow nor has an animal companion. Gandalf is a powerful wizard, yet we rarely see him do much magic...other than casting out Saruman's influence from Theoden and bringing blinding light, dawn, etc. While he has a lot of the iconic trappings of a D&D Wizard, he doesn't much have the mechanics to back it up (he almost never uses any spells, wields a magical longsword in combat, fights in melee frequently and comes out unscathed, etc.)
Merlin is a bit better, but not much. Both Gandalf and Merlin come from a much more ancient conception of magic, the Wisdom/Great Work type thing, which to modern audiences has been almost wholly absorbed by alchemy and such. Neither of them performed magic from spellbooks, typically, though Merlin at least tended to have a library.
That isn't the point. The point was that if you wanted to play a wizard from a book, myth, folklore, or TV show or movie, you were encouraged to play a magic user. Because the magic user was the one who cast spells from wands, spellbooks, etc, and didn't have to pray to a god for divine magic. There are mounds of evidence in the history of D&D that supports this.