It's your best friend the Companion Cube! Incinerating it is an option, but remember, if you decide to incinerate the cube, there is no turning back (except of course restarting). The orange portal is kinda glitchy, it waits a second before transporting the cube to the blue portal. Oh, and we remind you that the companion cube will never threaten to stab you, and, in fact, cannot speak. If it does speak, however, please only answer its "yes or no" questions with, well, yes or no :)