Mad science can only be done properly in the dark, everyone knows that!
As for the maniacal laughter, that's just a perk of the job that Loone likes to indulge in. He's a nice guy, really.
This page was drawn by my other half Sam (a.k.a. Psi-Baka-Onna). You can view (and comment on if you have a deviantART account) the original version of this page here.