File:Palutena's Temple Boss?.jpg

Here's a brief summary.

This picture right here, shown in the Smash Bros. Direct, has a small bit of writing on the top left corner with some Japanese writing, the word HP, and a number. The japanese translates to "remaining", so this would be a countdown or something showing the remaining HP...of what? It seems possible that this could possibly be the current way of telling us the health of stage bosses.

First off, this would confirm that there is a stage boss in Palutena's Temple. Second off, this would be a way to check which stages have bosses: the big 2 seem to be Wily Castle and Pyrosphere. No sign of this counter appears in either of these stages from what we know in the direct, even when Yellow Devil shows up.

Now, this can mean a couple of things. First off, the number could simply be a debug sort of thing. After all, it's really small and hidden for a boss meter. It could also mean that this particular boss is tracked down by health, whereas the Yellow Devil will be tracked through something else, such as number of hits on the eye as compared to it's body.

Back to the Pyrosphere, we see no sign of this on any footage or photos of this whatsoever. While it's possible as told above that the meter is a debug option or that Ridley is tracked down by something other than health, it's possible that there wasn't any boss: Ridley was shown playable.

Just some food for thought.