Batman: Arkham Knight features many different characters, including Tim Drake and Barbara Gordon who, for some reason, are romantically involved. Although this union helps to drive a wedge between Tim and Bruce, the relationship is a strange choice that goes against what's canon in the comics. Instead of Tim, Barbara's relationship in Arkham Knight should have been with Dick Grayson.
There are a few likely reasons why the change from Dick Grayson to Time Drake was made in regards to Barbara
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