Eragon: ESFJ
Saphira: ISTP
Roran: ESTP
Brom: INTJ
Jerrod: ENTP
Angela: INTP
Murtagh: ISTP
Arya: ISFP
Orik: ESTJ
The Twins: INTP
Ajihad: ENTJ
Nasuada: ENFJ
The two elves that accompanied Eragon to Ellesméra were ENFP, but I forget their names. It's late.
Queen Islanzadí: ENFJ
Oromis: INTP
Glaedr: ISTP
King Orrin: ESTP
Galbatorix: INTJ