Random thoughts for this round:
Cash and Change - Ostrich and Catfish Eggs (Overdrive Ostrich vs. Volt Catfish)
Everything sounds too mechanical, and too thin. Interesting idea here though. Actually, the guitar, bass, and that lead synth kinda remind me of Mega Man Zero music.
Prophecy - Vector Point Engineering Volt Ostrich (Volt Catfish vs. Overdrive Ostrich)
Well, there are consistent song titles at least. For such an odd arrangement, this is pretty nice.
BlackPanther - Stinging Peril (Blast Hornet vs. Shieldner Sheldon)
Those drums could use some work! That lead synth could use some more snazz to it too, I think I could feel this more if the groove aspect was focused more I think.
Phonetic Hero - A Hornet and a Clam (Shieldner Sheldon vs. Blast Hornet)
There are some areas where the combination of instrumentation seems to clash in a minor fashion to me, most notably around the beginning. Nice song overall though.
As usual, thanks to all of the participants!