In addition to the one-off sock puppet on badscience referred to by Mojo, there was a poster called "adolphmayer" who chimed in on the memes thread to support TM (known here as Bubblefish) and posted nowhere else.
This is not proof that Gnu is Bubb but it does show that Bubb has previous when it comes to creating non-existant supporters.
This is not proof that Gnu is Bubb but it does show that Bubb has previous when it comes to creating non-existant supporters.