Where did they get the name Bass in Megaman Battle Network

Bass is not just in Battle Network, just as Megaman is not just in Battle Network; he is merely that series' incarnation of the franchised character. The name Bass is the English version of the name, and is meant to correspond with the robowolf Treble (get it!?). Treble is Bass's version of Megaman's robodog Rush. In Battle Network, Treble is effectively converted into Gospel, as the features are similar and the two team up at the end of MMBN 3 to create the super powerful BassGS, or Bass Gospel Soul.