How I imagine a crossover between my au and a more canon adjacent au would go( using Sonia and Leon as an example cause I think it's funny)
* Legendverse! Sonia and Leon walking in to a alt universe version of themselves freaking out about their situation*
L! Sonia, whispering to Leon: Is. Is this what I think it is?
Alt! Leon: Who- Who are you?! Where are we- WHY IS YOUR ARM SKELETAL?! ( Points to L! Leon's arm)
L! Leon, looking down at his arm: Oh, I forgot to change that back. Whoops! ( Uses powers)
*the two of them just freak out even more. L! Leon and Sonia look on slightly worried, but overall pretty chill*
L! Leon: I probably shouldn't have done that.
L! Sonia: Yeaaaaah, I don't think we can talk them down.
L! Sonia, looking at the alternate versions of them: .... Honestly, I think this is a level 3.
L! Leon: Welp. ( Starts using his powers) Sorry you two! No hard feelings! This will be painless, I promise.
Alt! Leon: Wha- *gets knocked tf out via Leon's powers*
L! Leon, smiling at her apologetically: Sorry, you too *knocks her the tf out via powers*.
L! Sonia: ....Well, I guess we'll tie them up now.
L! Sonia: Kidding! You take you and I take me?
L! Leon: *sighs* Yeah, sure....I do feel bad.
L! Sonia: Yeah me too. Though it could be worse. I'm honestly surprised it's not worse, actually. *Picks Alt Sonia up on her back* Oof- up we go.
L! Leon: Well don't jinx it now * lifts Alt! Leon up* So, we're heading to the Einars?
L! Sonia: No, we're stuffing the bodies in our basement.
L! Sonia: I'm kidding! .....mostly.
L! Leo: Carol is a terrible influence on you.
L! Sonia: *offended Sonia noises*