It's interesting to try and figure out what kinds of opponents would work against mine. Particularly me wondering how Flan would do in a battle against Bowser. (Depending on the tactics he used, he may or may not stand a chance.) And that got me thinking about battle tactic headcanons. So, here we go! (going to be a bit lengthy, so putting in a readmore.)
Flandre
We've already been over her tactics a bit, but she's a bit of an odd one out of the muses I'm talking about today. (AL characters will get their stuff posted on that blog instead.) Unlike the other two, Flan follows a completely different set of tactics from what one would expect.
As you probably already know, Flan's more the slow, ranged type. While she does have some formidable physical strength, she's too clumsy to make good use of it in close-combat... at least, not intentionally. Get too close, and you can probably expect either a point-blank blast or a claw to the face, but other than that she won't go out of her way to use any melee attacks. No, Levaeteinn doesn't count. (This incarnation of Flan doesn't even really use Levaeteinn that much.)
Flan heavily favors massive danmaku barrages of various elements and single-projectile splash attacks, as well as just straight up using raw elemental energy (usually resulting in the area being covered in ice crystals and the occasional bit of fire).
Flan also tends to position herself such that she can hit as big of an area as possible. This usually involves her finding a spot with a good view (or creating one herself). If she has Nova Feathers active, she might also just straight-up fly, although that's less practical, as some of her attacks do have some nice kickback, and she's not good enough to be able to compensate for that while flying.
She also uses a magic bow; she's not the best with it, due to her eyesight issues, but it enables her to make much more precise hits, especially since she can literally put any effect she wants on her arrows.
Her tactics change a bit when she activates Niji Mode. Since she gets permanent Nova Feathers during it, she takes advantage of it much more often. She also cares less about using potentially-lethal attacks, and as such is more than happy to start flinging much more dangerous attacks at you.
Eve
Eve's tactics are a bit more refined than Flan's. While, as a general rule, Flan just does whatever whenever it's needed, Eve is much more cautious and calculating. She uses whatever information she has on her opponent and uses it to create a general combat plan- then she sticks to that unless something forces her to change it.
Much like Flan, Eve doesn't participate that much in melee combat, generally speaking- she prefers to stay back and use her ranged attacks, which in her case consist of electron balls, lasers, lightning bolts, and a variety of other electricity-oriented attacks. However, unlike Flan, should the situation warrant it, Eve is more than happy to kick some ass (sometimes literally) at close range, in which case she has her drones, as well as short-range electric discharges, air blasts, bubbles, and kicks to use.
Eve is incredibly agile, and tends to take advantage of it in combat. The speeds she can reach rival that of a certain blue hedgehog, and allow her to very easily move around a battlefield. She can literally attack one opponent on one side of the battlefield and then give another on the opposite side a nice flying kick- all within the span of ten seconds. However, if you know where she's going to be, it's very easy to just trip her to take her out of commission for a good minute or so, as she'll probably go tumbling for a good ten seconds and then take another minute to recover.
There is one issue Eve has when it comes to combat, which is largely rooted in the fact that she's a machine- generally speaking, she's predictable. If you know her well enough, it's hilariously easy to predict what she'll do. It's still a matter of trying to keep up with her, but once you know what she's going to do, it's comically easy to mess her up.
Similarly, Eve always tries to opt for the most conventional approach to something, which again is rooted in her programming. There are times where she breaks free of both of these, but generally speaking, she's going to opt for a more conventional approach to solving a problem, even if it's less efficient. (This adds to her predictability.)
