So, in Earthbound Zero, there are only four battle themes anyway: Flippant Foe (against relatively weak enemies), Dangerous Foe (against stronger enemies), Hippie Battle (against Hippies, vehicles, and membes of the Bla Bla Gang) and the one exclusively for Giegue. Not too complicated, even though certain enemies should logically have Flippant Foe (like Skunks) or Dangerous Foe (such as Fireballs or Bombers).
In the other two games in the trilogy, though, it's a lot more complicated. Here's the entire key
, and let's take a look at everything based on what they are:
Animals: Some of the smaller, weaker, and/or more introductory ones have either Weak Opponent or Weird Opponent. A few larger and stronger ones have Weird Opponent, while a few others in general have Mobile Opponent. Arachnid enemies, Gigantic Ants, and Deadly Mice have Unsettling Opponent. And then there are a few with Battle Against Belch, which consist of Mostly Bad Fly (a recolor of No Good Fly) and the following group:
Aquatic animals: Armored Frogs have Mobile Opponent, and Plain and Tough Crocodiles have Weird Opponent, while Hard Crocodiles, Zap Eels, and Manly Fish have Battle Against Belch, while Manly Fish's Brothers have Sanctuary Guardian (probably to emphasize and "Ohhhh, shit!" feeling). Kraken and Bionic Kraken have Kraken of the Sea, which they share with certain other enemies.
Humans: Different battle themes, depending on who you're fighting. That even includes the Sharks as a subgroup.
Undead: Most have Unsettling Opponent, although Farm Zombies have Weak Opponent (despite not being actually weak) while Shattered Men have Sanctuary Guardian (despite not being as dangerous as that song would imply). Smelly Ghosts, meanwhile, have Mobile Opponent, even though Stinky Ghosts have Unsettling Opponent, and Evil Elementals have Kraken of the Sea.
Plants: Mushroom enemies have Mobile Opponent, Demonic Petunias and Hostile Elder Oaks have Unsettling Opponent, and others have Weird Opponent.
UFOs: Li'l UFOs and Cute Li'l UFOs have Weird Opponent, while Beautiful and High Class UFOs have Battle Against a Machine.
Robots: Usually have Battle Against A Machine, except for Frankystein Mark II (w/ Unsettling Opponent), Sentry Robots (w/ Weird Opponent), the Clumsy Robot (w/ Otherworldly Foe), and the four that explode (w/ Kraken of the Sea).
Objects: Usually have Mobile Opponent, although Worthless Protoplasms have Weak Opponent and Enraged Fire Plugs have Weird Opponent.
Psychedelic enemies: Kisses of Death, French Kisses of Death, and Loaded Dice have Weird Opponent, while Dali's Clocks, Tangoos, and Mr. Molecules have Mobile Opponent. Ego Orbs, meanwhile, have Unsettling Opponent.
Aliens: Mostly have Battle Against a Machine, except for Foppies/Fobbies (w/ Mobile Opponent), the Dept. Store Spook (w/ Unsettling Opponent), and Evil Eyes (w/ Weird Opponent). All Starmen have Machine, except for the Starman Jr., which has Otherworldly Foe (being the first boss in the game).
Fiery enemies: Soul Consuming Flames and Carbon Dog have Sanctuary Guardian, while Psychic Psychos and Major Psychic Psychos have Unsettling Opponent.
Electrical enemies: Mostly have Battle Against a Machine, except for the few bosses who fall under this.
Blobs: Always have Battle Against Belch, without exception, although they do share that theme with other enemies.
Dinosaurs: Wetnosaurs have Kraken of the Sea, while Chomposaurs have Battle Against an Unsettling Opponent.
Bosses: The ones guarding the plot coupons that Ness is after usually have Sanctuary Guardian, except for Thunder & Storm and Electro Specter (who both have Kraken of the Sea). That theme, though, is one they share with the Guardian Diggers, the Guardian General, and certain minor enemies in the game. Five other bosses have Battle Against an Otherwordly Foe, a theme which only they have: the Starman Jr. is the very first boss Ness fights in the game, and Carpainter and the Mani Mani Statue (which Ness fights twice, later as Ness's Nightmare) have significant plot roles throughout the game, but the Clumsy Robot seems to just have it randomly. I know that one was guarding Monotoli's Office where Paula is held captive, but it still isn't nearly as significant as the other four. Frank has his own theme, which he shares only with New Age Retro Hippies. Frankystein Mark II, Boogey Tent, and the Dept. Store Spook have Unsettling Opponent. Everdred has Mobile Opponent. Mini Barf, Master Belch, and Master Barf have Battle Against Belch, comprising exactly half the sludgy enemies in the game. Kraken has Kraken of the Sea, which it shares with certain other enemies. The Starman Deluxe, being a Starman, has Battle Against a Machine. And then, there are Giygas and Heavily Armed Pokey, which have their own battle themes, being the final bosses and all.
In all, I can't seem to make complete sense of all this, what constitute exceptions within a group or which enemies have a given song outside a group. The names of the songs aren't all that reliable either; I mean, the Clumsy Robot is not exactly "Otherworldly", and Kraken of the Sea, as we already know, does not apply exclusively to Kraken or Bionic Krakens. Not to mention that recolors of the same enemies also tend to have different battle themes. Don't get me started on Mother 3, although I will also welcome any info on that.
Can anyone make more sense of any of this than I'm able to? Or do some of you think that it's just completely random, aside from what's obvious?