The 13 Primes so far:
Prima Prime ✅
Vector Prime ✅
Solus Prime ✅
Micronus Prime ✅
Alchemist Prime ✅
Onyx Prime ✅
Megatronus the Fallen ✅
Alpha Trion (Titans Return) ✅
Quintus Prime ✅
Amalgamous Prime ✅
Nexus Prime ✅
Liege Maximo ✅
The 13th Prime (still undecided)