You can unlock these characters with a cheat code, but you can also earn them yourself:

KH7P320 > Aayla Secura

XV4WND9 > Admiral Holdo

OKV7TLR > Dengar

3FCPPVX > Großmoff Tarkin

SIDIOUS > Imperator Palpatine

BAC1CKP > Mister Bones

WBFE4GO > Nute Gunray

Z55T8CQ > Poggle The Lesser

GR2VBXF > Ratts Tyerell

VT1LFNH > Shaak Ti

T9LM1QF > Shmi Skywalker

SKYSAGA > Snap Wexley


These characters can only be unlocked with the listed codes and cannot be earned:

C3PHOHO > C-3PO (Holiday Special)

WROSHYR > YDarth Vader (Holiday Special)

TIPYIPS D-O > (Holiday Special)

LIFEDAY > Gonk Droid (Holiday Special)

KORDOKU > Poe Dameron (Holiday Special)

WOOKIEE > Wookie (Holiday Special)

The ships can probably only be unlocked with the codes.

ARVALA7 > Razor Crest

SHUTTLE > Resistance I-TS Transport (Galaxy's Edge Transport)



I hope I could help you. A like would make me very happy :)