waaaaaaayyyyyy to many start on earth its more unique and fun to start elsewere.
Planet- Pandora (Avatar)
Planet- Krypton (DC-superman's home world)
Planet- Apokolips (DC- Darkeid's world)
Planet- Xandar (marvel)
Island- Themyscira (DC- Wonder Woman's home island)
City- Wakanda (marvel- Blackpanther)