The stats say it all.
It is unsure how old the bearloon is, as it is unsure itself.
The bearloon has no gender, since it has no genitalia. Its only erogenous-zone seems to be its valve and the area around it. It does, however, usually go by the pronoun 'he'.
Its weight is unknown, since it is sometimes just filled with air, while other times it is filled with a thick lime-flavored liquid-latex.
The bearloon was turned from a human by ceralor
Little bit of column A, a little column B lol. I like to imagine that most of the time, it's melded into him from once being regular underwear before he changed. But he can remove it at will, and force others to wear it. He can also possibly control the tightness, flavor, and gooey-ness of the garment :3
Link
paulussilentarius
So is the green speedo actually, practically, different-coloured skin-- or is it just a highly unnecessary speedo? :P