Boro is a golem in the service of El Fabuloso (the Gnome). The Gnome travels inside Boro.
Boro can manipulate gravity and fire rays, and is immune to the supernatural. It is described as a “reviled being” (ser denostado) and a boleto de cerámica (“ceramic ticket”).
Boro was the vehicle that allowed the Gnome to reach the top of the Eiffel Tower and win the tournament.