Ra
Ra, a tiny sun
floating in a suit of armour.
No, seriously.
Far back in the mists of time, shortly before the construction
of the First Great Space
Wormery,
a sunbathing Space Worm sucked a tiny part of the proto-matter of our sun
directly into a McDonalds restaurant in Middlesex, Xathar III. Clearly
displeased by this treatment, the newly birthed
star incinerated the entire restaurant, and made for the headquarters of the
corporation she mistakenly blamed for the incident.
Upon learning of a disgruntled sun heading for their headquarters, the McDonalds
corporation launched all possible escape-restaurants toward planet Earth, where
they could set up a new home.
Ra followed the restaurants into the interplanetary void, but couldn't keep up
with their gherkin-powered celerity. Fortunately, she met Mogmog on her travels,
and was supplied with both transportation and a suit of Mog-designed armour in
exchange for supplying Mogmog with a nice fire to curl up and fall asleep in
front of.