Here are my guesses for the types of the characters:
Fire Emblem Heroes:
Alfonse: ISFJ 6w5 so/sp
Sharena: ENFP 7w6
Anna: ENTP 7w8 sp/sx
Fjorm: I have not got a clue
Gunnthrá: ISFJ 9w1 sx/sp
Veronica: I haven't the remotest idea
Laevatein: I haven't a clue
Laegjarn: I haven't a clue
Helbindi: ISFJ 6w7 sx/so
Loki: ENTJ or ENFJ and 3w2 or 2w3 (¿?)
Ylgr: ENFP 7w6
Surtr: ENTJ 8w7 sx/sp
HrÃd: Maybe ISTJ. 1w9 (It could be 3 self-preservation or 6 social)
Eir: INFP 4w5 sp/so
Fire Emblem 9/10:
Elincia: INFP 9w1 so/sx
Ike: ISTP 9w8 sp/so
Leanne: INFP 9w1 so/sx
Mist: ENFJ 2w1
Mia: ESTP 7w8 sx/so
Micaiah: INFJ (I'm not sure about her enneatype. I doubt between type 1 or 6 social)
Nailah: ESTP 8w7
Nephenee: INFP 4w5 sp/so
Naesala ENTP 7w8 sp/sx
Oscar: ISFJ 9w1 sx/sp
Oliver: INFP 4w3 sx/so
Reyson: ISTJ 1w9
Sanaki: ESTJ 1w2
Soren: INTJ 5w6 sp/so
Sothe: ISTJ 6w5 sx/so
Tibarn: ENTJ 8w7 so/sx
Titania: ISTJ (I doubt between type 1 or 6)
Zelgius: I haven't a clue
Fire Emblem Heroes:
Alfonse: ISFJ 6w5 so/sp
Sharena: ENFP 7w6
Anna: ENTP 7w8 sp/sx
Fjorm: I have not got a clue
Gunnthrá: ISFJ 9w1 sx/sp
Veronica: I haven't the remotest idea
Laevatein: I haven't a clue
Laegjarn: I haven't a clue
Helbindi: ISFJ 6w7 sx/so
Loki: ENTJ or ENFJ and 3w2 or 2w3 (¿?)
Ylgr: ENFP 7w6
Surtr: ENTJ 8w7 sx/sp
HrÃd: Maybe ISTJ. 1w9 (It could be 3 self-preservation or 6 social)
Eir: INFP 4w5 sp/so
Fire Emblem 9/10:
Elincia: INFP 9w1 so/sx
Ike: ISTP 9w8 sp/so
Leanne: INFP 9w1 so/sx
Mist: ENFJ 2w1
Mia: ESTP 7w8 sx/so
Micaiah: INFJ (I'm not sure about her enneatype. I doubt between type 1 or 6 social)
Nailah: ESTP 8w7
Nephenee: INFP 4w5 sp/so
Naesala ENTP 7w8 sp/sx
Oscar: ISFJ 9w1 sx/sp
Oliver: INFP 4w3 sx/so
Reyson: ISTJ 1w9
Sanaki: ESTJ 1w2
Soren: INTJ 5w6 sp/so
Sothe: ISTJ 6w5 sx/so
Tibarn: ENTJ 8w7 so/sx
Titania: ISTJ (I doubt between type 1 or 6)
Zelgius: I haven't a clue