Batman Beyond (1999–2001)
Lord Batman's costume bears a Bat-insignia on the chest similar to that of Terry McGinnis's Batsuit.
The robot targets resemble the show's Zeta, the Society's escape craft resemble the remodeled Batmobile, and Batman uses electricity and feezing to put a liquid creature out of action.
The background of the Batcave is taken from Batman Beyond rather than Batman: The Animated Series (1992), as evidenced by Terry McGinnis' suit being on display beside Nightwing's.
When Scarecrow is hallucinating from his own Fear Toxin, his manifestation of Batman looks like a demonic version of Terry McGinnis' Batman costume.
The Titan formula test subject that Batman fights at the beginning (with the asymmetric limbs) is reminiscent of the character "Big Time."