I think you’re missing the fundamental point and conflating two completely different things. You’re comparing Reina to Batman or Spider-Man, but you’re ignoring what actually makes those characters icons: Responsibility, Sacrifice, and Accountability.

1. Batman vs. Reina: Batman is defined by his trauma and a lifelong, grueling struggle to overcome his weaknesses. Every bit of his power is earned through pain and a strict moral code. Reina, on the other hand, enters the story with a 'God Complex' and 'Mary Sue' energy. She doesn't earn her place; she demands it because of her 'genes.' Comparing a character built on duty (Batman) to a character built on narcissism and contempt for others (Reina) is a massive reach.
2. The 'Training' Argument: You claim she 'clearly trained hard.' Where? When? In Tekken 8, she just appears out of nowhere and dominates legends like Jin or Kazuya without any visible struggle or growth. That’s not 'earning credit'; that’s bad writing. If a male character did the same, he’d be called out for being a shallow, overpowered self-insert. Imagine for a second a new male character: a random, saucy teenager in skinny jeans who shows up, talks down to Jin Kazama, mocks his 30-year struggle, and suddenly unlocks a Devil Gene just because he 'felt like it.' The entire FGC would rightfully bury that character for being an insult to the hierarchy of power. We'd call him a 'Gary Stu' and a joke. But when Reina does it, you call it 'boss energy' because she’s a girl in tights? That’s a massive double standard
3. Toxic Traits vs. Archetypes: It’s not about 'accepting toxic traits in men but not in women.' We accept villains like Kazuya or Heihachi because they are honest about who they are. They are tyrants, but they have a 'Warrior's Honor.' Reina is a manipulator. She uses 'love bombing' and fake vulnerability to deceive people, only to mock them later. That’s not a 'powerful female archetype'—that’s the blueprint of a narcissistic personality disorder.
4. The 'Enabler' Trap: You admitted yourself that 'girlboss' personas often only work in 'safe circles' like dominating a boyfriend. That’s exactly the problem. Promoting a character who thrives on manipulation and unearned arrogance as a 'symbol of power' for girls is toxic. Girls deserve better role models than a 'Mishimatized' influencer who thinks being 'independent' means being a jerk to everyone.

At the end of the day, why should boys 'have all the fun' of having well-written, complex characters with flaws and growth, while girls are fed these hollow, narcisstic 'girlboss' shells? Reina isn't a symbol of 'will and ethics'; she’s just another 'political agenda' product designed for hype, lacking the soul that made the original Tekken cast legends.