We have covered every speaking character in this episode, but let's skip back a bit for a bonus-o-rama.
My favourite joke in the episode is not Homer falling down Springfield Gorge, but is Lance Murdock adding a lion to the deadly pool he jumps over. It's very silly, and is made funner by the fact that the lion seemingly gets his revenge moments later.

There are two instances of Bart's daredevil outfit, one in a fantasy and one in his real showcases for the other kids. In the interest of being thorough with all these alternate designs for the main family, here are both. It's a nice detail that while his fantasy version is basically a straight rip off of his hero Lance Murdock, the real version cannot live up to those incredible production values, he just doesn't have the budget for those lightning stripes.

We are unlikely to cover Lance Murdock himself...ever again, I think, so we might as well include his one alternate costume, depressing though it may be:
(The joke of him using his mouth to write an excessively long autograph is very funny.)
And lastly: kid.
As with the tuba player from earlier this episode, sometimes a Springfieldian child sticks out like a sore thumb to me now simply because we haven't covered them. Everyone else in this image is recognisable (I'm not sure if I've drawn the girl yet, but I definitely recognise her), so it seems like when an unfamiliar kid design shows up it's only right to highlight them. We will probably never find out what this kid's deal is.
This post is part of my "Every Simpsons Character Ever" series. For a list of my rules in this project, click here.