Kate Kane (Arrowverse)

Kate Kane is the cousin of Bruce Wayne and the protagonist and title character of Batwoman.

Why She Sucks

 * 1) Ruby Rose does an exceptionally poor job portraying her.
 * 2) She looks like a boy.
 * 3) She is incompetent, annoying and selfish.
 * 4) She arrogantly believes that she is better than Batman despite her incompetence, but is often more of a killer when he choked August Cartwright to death for chopping her mother's head, and ruining her life.
 * 5) She steals Batman's gadgets. This also makes her a hypocrite as she says she "won't let a man take credit for a woman's work".
 * 6) She got upset that people thought she was Batman, showing she cares more about validation than protecting Gotham. People thinking she's Batman would have actually worked to her advantage as Kate Kane would be off the suspect list.
 * 7) She gave an expensive watch to a homeless woman. This probably led to said woman either being murdered for the watch or spending it on enough drugs to overdose on.
 * 8) She constantly lets Alice go despite her killing people.
 * 9) She ends up leaving the show and being replaced with Ryan Wilder making her whole story arc pointless.