Warning : Spoilers Ahead for Infinite Frontier: Wonder Woman
The DC universe is full of alternate timelines filled with alternate characters who mirror its heroes and in the first arc of Wonder Woman's story in Infinite Frontier, she faced a foe who could be said to be her own Batman Who Laughs, particularly if her costume is anything to go by. Janus is a parallel of Wonder Woman, albeit in a different way than Batman's Dark Nights foe.
Dark Nights and Dark Nights: Death Metal are DC events that pitted the company's iconic heroes against a foe known as the Batman Who Laughs and his allies. This villain is an alternate Batman who partnered with the Dark Knights - other Batman parallels from the Dark Multiverse. The Batman Who Laughs is portrayed as a combination of Batman and the Joker, but the core idea is that he is the polar opposite of Batman in his approach to life. Wonder Woman's recent foe, Janus, is very similar in this regard.
Janus is one half of a dual identity Roman deity. Shortly after Wonder Woman ends up in Valhalla, she must chase after Janus. The half of Janus that she seeks is the half that focuses on the future. This half attempts multiple times to lure Wonder Woman into making decisions that aren't very heroic and that go against the things that the heroine stands for. In many ways, Janus is the opposite of Wonder Woman - making her an interesting juxtaposition to the Goddess of Truth in a way similar to the Batman Who Laughs.
Janus' twisted parallels to Wonder Woman become increasingly apparent in her outfit. It mirrors Wonder Woman's Nordic-inspired uniform, though it does so in dark ways. It has a similar aesthetic to Dark Nights: Death Metal with the shoulder spikes, as well as the sharply pointed tiara. Janus' face mirrors and twists Diana's as well, giving her an evil sneer. Wonder Woman's Valhalla outfit has her signature eagle, which has popped up on other costumes in her comic history. Janus' outfit twists the eagle into a dragon and it also twists the stylized portion where Wonder Woman's W-logo is usually found. Her lower skirt is tattered and she wields a giant axe. While Janus is not Wonder Woman from the Dark Multiverse, her appearance would allow her to fit that role.
Wonder Woman's latest foe tries to sway her into making decisions that will negatively impact her life. Janus pushes Diana to embrace her darker side, which is something that the heroine isn't willing to do. Her foe even bluntly states that she "would become me, the God-Queen of Asgard," which is a role that does not suit Diana since she belongs back in her own home. Diana has significant connections to Themyscira, Olympus, and the Greek Gods. The Roman counterparts are far more brutal by comparison and Janus does not even have a Greek counterpart, leaving the door open for Diana to fill that role in some regards. Although this is not a story involving the Dark Knights, it certainly has similar themes regarding how heroes can be impacted by just a few decisions. Janus may not be an official Dark Multiverse iteration of Wonder Woman, but she definitely appears to be her own mirrored foe like DC's Batman Who Laughs.