SPOILER WARNING FOR THOSE NOT CAUGHT UP TO THE MOST RECENT UPDATES.
I don't want to bother using spoiler tags.
Okay, so something got me thinking. Spender clearly has light-related powers. He's been shown to make things/himself brighter or glow and apparently he can flick off the lights. But check out
page 3-44. It looks almost like he nullifies and/or absorbs Isaac's lightning. That kind of deals with light, since lightning involves light, but I dunno. Could this be a different spirit's power? Does one of his spirits emit light and another absorb light? On a later page, he mentions his mind being a "delicate balance." Maybe that's the balance?
But, regardless, I think his actions on 3-44 provide evidence he's a medium. Like Isaac, he seems to use his powers without the aid of a tool. As opposed to Isabel, Ed, and Max, whose powers come directly from/out of the tools they wield. (I'm excluding "standard" spectral energy powers, like spec-shots, of course.) Even if Spender's sunglasses are a tool, he demonstrated those powers using his hand, not the shades themselves. (Although his shades do glow dramatically in the 7th panel.)
Although I really wonder about how he spoiler tagged his words in the last panel, to which Isaac reacted. Does he also have the power to break the 4th wall? XD I know the author discussed the 4th wall breakiness in the alt text, but still, Isaac DID react. I'm curious as to WHY it was spoiler tagged, too. When removed, the information is interesting, but I dunno about it being worthy of spoiler tags, either for Isaac, his spirit, or for us, the readers. Time will tell, I suppose.
Also, really interesting about the Mr. Walker and the "weird suits" and the "mooks at Isabel's place" comment from Isaac, the latter two whom have been shown in recent updates.
I love all the foreshadowing in this comic. Yeah, I still find 3-44 to be one of the most intriguing pages.