Comes down to three: (in size order from largest to smallest)
'Sagat' (thai plakat) is 1 point bigger than the normal size bettas, very aggressive at feeding time; had to lower his water level because he can jump.
'Dang Banger' (red plakat) is highly aggressive and flares at ALL movement around his bowl; point your finger at him and he flares at it, then tries to get at it through the glass.
'Thornton' (one of two remaining coppers) is small, but fast and decisive; does not back down from the bigger bettas, and fought off two red-eye tetras who were nipping at him - he was outnumbered, but I guess he doesn't know how to count.