wan
the first avatar in the history who kept his firebending and stayed in spirit world.
later he met raava and vaatu and his mistake set vaatu free.
to make it up, he united with raava and took other three elements.
after locking vaatu away he closed the gate to spirit world and began a new era.
@wucturne

sokka
team avatar strategist, inventor and a leader in republic city.
he was the smartest person in team avatar and although he's not a bender he is a very good fighter.
@not_tobe_known

toph
she was born blind but that didn't stop her. she learned how to see with feeling the earth from badhermoles.
later she joined team avatar and halped them end 100 year war.
she discovered metalbending. after war she founded a metalbending academy and helped a lot of people to learn it.
in republic city she became the chief of police to keep the city safe.
@dystopiaism

katara
one of the best waterbenders and the best healer in the world during korra's time.
she was with aang in all of their adventures to save the world. she also knows how to bloodbend under the full moon.
she saved aang and their group with her healing ability mang times.
@CTAN_n

mako
he was a firebender from a fire/earth family.
at first he was a pro-bender but after discovering his talent he joined to korra's team and then became a cop.
he also knows lightning-bending and with this ability he saved korra twice. once from amon and second time from kuvira's forces.
@mikaros

jinora
granddaughter of aang and katar and daughter of tenzin
she was the youngest airebender who became a master in the age of 11.
she has a powerful spiritual force and has a special bond with spirits.
@bittersuiteee

tylee
from a nobel family in firenation
she's a chi blocking master and later she becomes a kyoshi warriors member and taught them her techniques.
@justfri3nds