Aventine Miniatures have released African Elephants and Republican Roman crews for them.
From their announcement:
We have added two African Elephants to our range. These are our best guess at what the elephants used by the Carthaginians, Numidians, Ptolemaic and Roman armies used following the loss of the Indian elephants. The Roman crew is again a guess, did they put their troops into the towers or just employ Numidians? Who knows but it is possible that Romans did climb onboard thus the addition of the Roman crew sets. We will be adding Carthaginian and Numidian crews for these along with another set of elephants with astride crews for the above nations. Our existing successor elephant crews can also be used to provide Late Successor Elephants.
Happy New Year to you all
Keith and Adam