Back on topic:
About eight years ago, I played a similar character. I'd just gotten the 2E green Vikings book and wanted to try out the Berserker in it.
Well, my rolls were reasonably good, but I wanted to see a real hulk of a berserk, so I took advantage of a (house) rule that I suspect a lot of long-time gamers have encountered: you can trade two points of one stat for one point in another.
By the time I was done, his stats were: S18 D16 C18 I4 W5 Ch13.
He was stupid, straightforward, aggresive, uneducated, crude, simplistic, and the absolute first person you noticed when you walked into a room -- especially if a battle was going on.
He was really only useful as a tool, and that's how most people (who weren't running it terror) viewed him. The good guys wanted him around because he was great at breaking things, like dragons. On the other hand, he was so astoundingly gullible, that anyone who got him alone for a moment might just as well have cast a Charm on him.
He had no concept of treasure and most often kept "trophies" rather than gold. Actually, I'm pretty sure the other PCs always had to buy his food, etc. because no one took hacksilver.
Overall, the character was a challenge and a blast to play and the other players enjoyed it, too. But even two low scores is a challenge.
A character with the scores you described would play similar, except with just enough Wisdom to realize that he was a bit gullible -- but usually after the fact. Kinda like "buyers remorse". I could see him constantly coming to the group, "Guys, I just done sumptin' bad, but I don't remember all of it."
His charisma would also put him more in the "fool" than "tool" category. No matter what he did, it would never come off as impressive. At best, it'd look like luck ("No, really, I _am_ the best swordsman in the Flanaess."). This guy could look like a goober if he killed a dragon single-handedly in under a minute. Depending on their disposition, NPCs will either patronize or mock him. Any threats he makes will be ignored, and if he follows through, he'll be labled a maniac rather than dangerous.