Gary Whiteborn (Ren Dover from The Author's POV):
Element Affinity - Wind, Lightning, Sound and Illusion.
Black hair and dull grey eyes, emotionless.
Quick and precise swordsmanship relying on fast movements to quickly end fights.
Alistair (Not reincarnated):
Element Affinity - Wind, Fire and Lightning.
White hair and scarlet eyes.
Relies on his magical eyes capable of tracking all movements and even copying those movements. His eyes are a tier above Gary's.
Rachel Glidesburn (Ordinary Reader of TBATE from Earth):
Element Affinity - Earth and Water.
Blonde hair and blue eyes.
Uses archery and long range spells.
Lancelot Orbel (Yuno Grinberryall from Black Clover)
Element Affinity - Wind and Gravity.
Shiny black hair and jewelled eyes.
Loved by mana and best at controlling it. Equal mastery in both conjuring and augmenting from an early level.