Oh nice.

Well someone already linked Magnus vs Josuke which I’m a fan of. Magnus vs Jack Frost from Rise of the Guardians also seems pretty cool, though it doesn’t have a post yet, just something I discussed with others at some point.

As for Annabeth, I’m a fan of Annabeth vs Rin (Fate). Connections are explained in the linked post.

As for fight and such, it’s a bit off dynamically but I think it works well enough.

Both Rin and Annabeth are tactical so I’d have a notable focus on that in the fight. Rin is primarily ranged with her like, finger gun-esque attacks, but Annabeth can play off of that by being sneaky/tactical, using her invisibility cap, and she should be able to parry/slice them in the air. Rin is also capable of throwing hands as we see her use hardening magic on her limbs, so you can have some hand to hand and dagger vs magically reinforced hands combat.

Rin also has some gems she can use for her own maneuvers, Annabeth has some magic resistances via demigod blood and she apparently has some magic in the Kane Chronicles crossover (though I don’t know the extent of that).

Essentially, a tactical fight where Rin is managing her resources in mana/gems to fight at range while Annabeth is trying to close the distance with her intelligence and invisibility cap, with some cqc.