Original Timeline
Allies
Yoruichi Shihoin
Sui-Feng sees Yoruichi as her idol. However, her admiration of the Godess of Flash has grown into an obsession, to the point of which some people think that she may have a crush on her.
Marechiyo Omaeda
Sui-Feng and Omaeda have a complex relationship, as the latter is the former's lieutenant. Sui-Feng shows little to no respect for her lieutenant, and Omaeda is forced to tolerate his superior's abuse. Sui-Feng gets easily annoyed by her lieutenant even when he talks, Sui-Feng tends to kick or punch him unnessicarily. Omaeda is mentally annoyed by the abuse his Captain displays upon him, but nonetheless he is loyal to Sui-Feng and will fight by her side.
Second Division
Enemies
Baraggan Luisenbarn
Sosuke Aizen
Due to his betrayal, Sui-Feng detests Aizen with a passion.
Neutral
Ben Tennyson
Though on neutral terms, Sui-feng holds a grudge against Ben; which the latter is unaware of. This is because Sui-Feng believes that Ben 'seduced' her idol: Yoruichi.
Tia Harribel
Kevin Levin
Gwen Tennyson
Professor Paradox
Alternative Timeline
Allies
Marechiyo Omaeda
Enemies
Sosuke Aizen
Ggio Vega
Baraggan Luisenbarn
BG9
Neutral
Kisuke Urahara
Sui-Feng detests Urahara, whom she blames for Yoruichi's departure.