Naughty naughty, Space-head jerk! You wanted ta get inta my head, an' in turn I got inta yours -- an' with me came Mistah J. 
Harley Quinn and Power Girl #5 is an issue of the series Harley Quinn and Power Girl (Volume 1) with a cover date of January, 2016. It was published on November 4, 2015.
Synopsis for "Bighead Space-God"
With the Harvester of Sorrows looming over the Lust Moon it demands to know who summoned it, Power Girl throws the unconscious Oreth Odeox toward the colossal head where it is absorbed by an oversized pore. Vartox explains the Harvester of Sorrows to his companions, a force of madness which consumes star systems unabated. Harley Quinn takes this as an indication to leave but Power Girl is hit first by a sense of duty as heroines and secondly by a blast from the Harvester.
Quinn slowly makes her way to her feet with the help of her "spirit animal", Magnum PI, who reminds her of the hard-light gloves and she rides into the mouth of the Harvester on a motorbike she created. Inside she encounters a sentient creatures that resemble fruit who shoot her with weapons that envelop her in a sticky cover and she is taken away and claimed by the Harvester. By absorbing her into himself, the Harvester gains access to Quinn's memories including those of the Joker which bring a viral infection with them, rapidly the Harvester morphs into a colossal Joker head with Quinn inside joking about an imminent explosion.
Outside Power Girl and Vartox recover from the earlier blast and Groovicus points out that Quinn flew off towards the Harvester, they decide to follow after her. Inside the head Quinn walks freely but acts as if she is possessed by the spirit of the Joker, she leaps onto the face of Vartox as he enters and tears his moustache off his face and she throws it onto Power Girl's bust. Finally having enough, Kara grabs Quinn by the scruff of her neck and, turning to the now crying Vartox, punches him out into space. Kara collects Groovicus just as the Harvester's head explodes into a million pieces and Quinn is freed from her own psyche.
Concerns are raised for Vartox and his whereabouts but he soon flies down from Outer Space in time to demonstrate his spontaneous moustache regrowth, taking that as the moment he then gets down onto one knee and proposes to Power Girl.
Appearing in "Bighead Space-God"
Featured Characters:
Supporting Characters:
- Vartox
- Groovicus Mellow
Antagonists:
- Oreth Odeox (Absorbed)
- Harvester of Sorrows (Destroyed)
- Harvester Anti-bodies
Other Characters:
- Poison Ivy (In a vision)
- The Joker (In a vision)
- Big Tony (In a vision)
- Sy Borgman (In a vision)
- Nathan the Dachshund (In a vision)
- Bernie the Beaver (In a vision)
Locations:
- La Galaxia del Sombrero
- Lust Moon
Items:
- Hard-light Gloves
Vehicles:
- Hard-light Motorbike
See Also
- Cover gallery for the Harley Quinn and Power Girl series
- Images from Harley Quinn and Power Girl Vol 1 5