1. I had a good chuckle at most of these. :) - a.) Especially image/strip #4, the way Batwoman licked her lips and Harley closing her eyes & biting her lip, it really added to the punchline and cracked me up. ;D - b.) Not sure I understand image #6 though, I 'get' the traditional Power Girl (left), and 'Galatea' [Power Girl's evil clone] (right), but what about the middle 'Power Girl'(?) slutty-waitress with the coffees?
2. Power Girl, Earth-2, & Kryptonite ~ A bit of comic lore (& nerdism ;p ) for those less familiar/fluent with DC Comics... - a.) Power Girl (Kara Zor-L) originally hailed from (the multiversal) Earth-2 as the adult daughter of Superman-2 (Kal-L) and Lois Lane(-2). After the (comic-)Crisis of Infinite Earths, Power Girl was left on the consolidated Earth-Prime, but found new family among the Super-Heroic community.
- b.) Years later, when Earth-Prime's Supergirl (Kara Zor-El) inevitably returned from the dead (from having died in the comic-Crisis), Power Girl obligingly adopted the name "Karen Starr" to avoid confusion between their names. This was despite the differences in age and physique between the two (Supergirl is generally a late-teens to young-adult, Power Girl is a full adult).
- c.) As for kryptonite, Power Girl initially was immune to Earth-1/-Prime kryptonite, since kryptonite from different Earths are different in their radiation "frequency." However, years after the (comic-)Crisis, Power Girl would eventually acclimate to Earth-Prime's climate/conditions, and thus now suffers from Earth-Prime kryptonite radiation as with the rest of her (Earth-Prime) Super Family. Though as a counter-balance, Power Girl also RESISTANT to kryptonite's effects since she is half-human, so it takes far more kryptonite exposure to affect Power Girl (either more kryptonite amount, or more exposure time).