Notes

The Big Three gods, Zeus, Hades, and Poseidon, swore an oath to not create any more half-blood children, as they were to become far too powerful. Unfortunately, it seems that not every brother has been able to keep his promise.

#6 in rickriordan
#7 in herosofolympus
#183 in #athena
#62 in lightningthief
#193 in greekmythology
#337 in percyjackson