Wow. Thank you for introducing this beast to me.
Now I need one.
I saw there are cool accent modes on the plasma voice and it even works with midi.
My first idea would be to try the Torso T1 sequencer with it.
I imagine it could be a good fit.
T1 is nice for rhytmic stuff and arps.
And it´s small and looks good besides a small pod.
If you want something in your rack:
Clank Chaos is nice to generate a full random sequence and change it until you like it.
Can go really bonkers - you have to carve the sequences out
Plasma voice seems to have all in it, filter, envelope, distortion = full voice
maybe just add a reverb pedal or any fx of taste.
just pod + sequencer + pedal
or maybe does a MN Mimeophon fit in your pod?
I have my hands on NE Gamut Repetitor and Multi Repetitor at the moment. These could be a good match as well.
Gamut Repetitor offers also nice arps but more on the fly like a turing maschine without save and recall -option.
I saw the performance of the creator with a Erica Black sequencer - also very nice.
But with your small case better use an external sequencer.
Greetings
Chris