This whole parcel is made up the simultaneous collapse and merging of several decades worth of space-time-matter in an alternate dimension. This collapse created a compressed ball of pure energy, which tore a temporary hole in the cosmic fabric of the boundaries that make up our universe. This energy settled in Switzerland and influenced several susceptible foeti. Perhaps the energy manifested itself as the foeti. Regardless, Gotthard is the end result.
To reference Metallica referencing Lovecraft, Gotthard is the thing that should not be. They are not part of our universe. They are an oddity of space, time, literal existence - an artifact that suggests celestial mechanics that are difficult to comprehend, or impossible for the sane of mind to truly understand.
Perhaps humanity is better off not thinking about this living manifestation that is properly termed the 80902K phenomenon. We aren't meant to know how a band is able to simultaneously exhibit characteristics of the '80s, '90s, and 2000s. Any person of our dimension would probably have their brain literally diced into pieces and be ripped apart by cosmic forces if they attempted to understand and know.
Gotthard is the idol of Cthulhu, the box of Lermarchand, the mask of The Humongous - something forbidden and unknown, that to tamper with is to invite doom upon one's self.
And yet, like many forbidden items, there is something strangely compelling about Gotthard. Humanity cannot stop pressing buttons, even to our own detriment, and this case is no different. Proceed with caution, friends.