I've seen him a few times.

He don't hang round the settlement 'cept when the Injuns are up, an' nobody sees him much.

At home he sets round silent-like, an' then mebbe next mornin' he'll be gone, an' won't show up fer days or weeks.

But all the frontier knows of his deeds.
Fer instance, I've hearn of settlers gettin' up in the mornin' an' findin' a couple of dead and scalped Injuns right in front of their cabins.

No one knowed who killed 'em, but everybody says 'Wetzel.' He's allus warnin' the settlers when they need to flee to the fort, and sure he's right every time, because when these men go back to their cabins they find nothin' but ashes.