Enemy Memory Usage

To do: If someone with better formatting skills and patience wants to improve this page, please do.

Each enemy in Pikmin 2 uses a different amount of memory, with this chart, you can theoretically know exactly what your limits are on what can be present at once. The size of the enemy heap is constant, so your available space will never change, regardless of anything else about the level. Note that in story mode, the enemy heap is a total of 2099.2 kilobytes, for both caves and above ground. In Challenge mode, the enemy heap is smaller, at 1536.0 kilobytes. In Versus mode, the enemy heap is 1843.2 kilobytes.

Having one of a single enemy means its model and animations need to be loaded, so it will use far more memory compared to any subsequent instances of that enemy. Both the first and additional enemy sizes will be used here. To calculate what your level needs, use the formula

Size = x + (y * (s-1))

Where x is the single instance size, y is the subsequent instance size, and s is the number of the enemy in your level.

Note that for some enemies, their existence will automatically allocate another enemy. The size here should include these enemies, although there are some odd cases involved, I will try to clarify in notes when I can, although some specific enemies may be inconsistent and depend heavily on what else is in the level.

Some enemies, such as the pellet posy and Titan Dweevil, spawn objects such as pellets with their existence, these objects aren't put in the enemy heap, and aren't accounted for in this chart, since they wouldn't affect the limit on enemies.

Naturally, all of these sizes reflect the vanilla game, but they are subject to be different in mods, a general way to get an idea of a custom enemies size is to look at the combined size of its model and animation archives when not compressed. These sizes were gotten with loading an empty cave set to spawn one of the given enemy, or two for the subsequent size.

Certain enemy types can share assets, meaning if one is loaded, the other can be loaded without needing to add its initial size, and instead going right to its subsequent size, these cases will be noted where possible.

Files

Enemy Name	Usage For Initial Instance	Usage for Subsequent Instances	Notes
Fire Geyser	14.8 kb	2.8 kb
Gas Pipe	15.1 kb	2.8 kb
Paper (Chiyogami)	21.2 kb	2.9 kb
Electric Wire	22.1 kb	5.7 kb
Clover	23.4 kb	2.9 kb
Small Shoot	24.3 kb	2.8 kb
Small Dead Figwort	25.5 kb	2.8 kb
Breadbug House	26.4 kb	1.9 kb
Iridescent Flint Beetle	27.5 kb	4.0 kb	If a single Flint/Glint/Doodlebug exists, any others will count as subsequent
Iridescent Glint Beetle	27.5 kb	4.0 kb	If a single Flint/Glint/Doodlebug exists, any others will count as subsequent
Doodlebug	27.5 kb	4.0 kb	If a single Flint/Glint/Doodlebug exists, any others will count as subsequent
Horsetail	28.6 kb	2.9 kb
Fiddlehead	29.0 kb	2.8 kb
Glowstem (Red)	30.0 kb	3.3 kb
Glowstem (Green)	30.0 kb	3.3 kb	The two glowstems have fully seperate models/animations
Small Figwort	31.0 kb	2.8 kb
Bomb Rock	31.1 kb	3.2 kb
Wogpole	31.8 kb	3.4 kb
Dandelion	37.0 kb	3.1 kb
Common Glowcap	38.0 kb	3.1 kb
Large Dead Figwort	38.5 kb	3.2 kb
Seeding Dandelion	40.4 kb	3.3 kb	The plants are all excluding any potential Spectralids
Female Sheargrub	47.0 kb	3.6 kb
Male Sheargrub	47.5 kb	3.8 kb	Both Sheargrubs share animations, but not model. So using both will save some memory, but not the full amount of the single instance.
Margaret	47.8 kb	3.0 kb
Foxtail	48.5 kb	3.0 kb
Ravenous Whiskerpillar	48.6 kb	3.4 kb
Bulborb Larva	49.1 kb	3.6 kb
Large Shoot	49.5 kb	2.8 kb
Pellet Posy	50.7 kb	4.4 kb	All sizes of pellet are the same amount of memory
Large Figwort	51.7 kb	3.2 kb
Skitterleaf	52.8 kb	3.7 kb
Anode Beetle	53.4 kb	3.9 kb
Waterwraith Tires	53.9 kb	5.3 kb
Falling Rock	56.4 kb	4.3 kb	Also the rock shot by cannon beetle larva
Any Candypop Bud	58.3 kb	5.1 kb	All Candypop Buds are the same internally, one being loaded will make all others use subsequent size.
Cloaking Burrownit	63.8 kb	4.2 kb
Water Dumple	64.4 kb	4.3 kb
Shearwig	66.3 kb	4.0 kb
All Four Elemental Dweevils	71.9 kb	4.9 kb	All four main dweevils share the same model/anims. Having one counts as the initial for all 4.
Swooping Snitchbug	78.3 kb	4.7 kb
Antenna Beetle	81.9 kb	5.1 kb
Fiery Blowhog	84.1 kb	6.0 kb
Watery Blowhog	84.1 kb	6.0 kb	Fiery/Watery share the model/animations, so either being present counts as the first instance.
Yellow Wollywog	91.8 kb	4.7 kb
Mamuta	92.4 kb	5.7 kb
Bumbling Snitchbug	94.4 kb	4.8 kb
Dwarf Bulbear	95.2 kb	4.5 kb	Animations are are shared with other dwarves, but not model. So only partly paired with them.
Dwarf Red Bulborb	96.0 kb	5.3 kb	If a single dwarf red/orange/snow Bulborb exists, any others will count as subsequent
Dwarf Orange Bulborb	96.0 kb	5.3 kb	If a single dwarf red/orange/snow Bulborb exists, any others will count as subsequent
Snow Bulborb	96.0 kb	5.3 kb	If a single dwarf red/orange/snow Bulborb exists, any others will count as subsequent
Gatling Groink	99.9 kb	6.9 kb	Both walking and stationary
Volatile Dweevil	103.0 kb	8.1 kb	This dweevil is bigger than the other 4 due to the Bomb Rock.
Wollywog	105.7 kb	4.9 kb	The two Wollywogs are fully separate internally.
Bulbmin	110.2 kb	6.4 kb	The babies do not count toward the enemy heap
Puffy Blowhog	110.9 kb	6.1 kb
Lesser Spotted Jellyfloat	113.8 kb	4.9 kb
Greater Spotted Jellyfloat	114.0 kb	5.3 kb
Group of Unmarked Spectralids	116.1 kb	??? kb	Same issue as with Mitites, hard to test an individual entity
Spotty Bulbear	119.8 kb	6.1 kb
Red Bulborb	126.4 kb	7.4 kb	If a single red/orange/hairy Bulborb exists, any others will count as subsequent
Orange Bulborb	126.4 kb	7.4 kb	If a single red/orange/hairy Bulborb exists, any others will count as subsequent
Hairy Bulborb	127.1 kb	7.5 kb	Hairy Bulborb is a tad bigger than the other two because of the hair effects.
Fiery Bulblax	127.4 kb	9.1 kb
Burrowing Snagret	128.8 kb	9.3 kb
Withering Blowhog	129.5 kb	6.5 kb
Hermit Crawmad	131.7 kb	7.3 kb	Includes its nest
Breadbug	136.1 kb	5.7 kb	Including its house
Giant Breadbug	141.8 kb	6.9 kb	Including its house
Creeping Chrysanthemum	145.6 kb	5.9 kb
Set of 10 Mitites	145.6 kb	??? kb	Mitite allocation is very strange and doesn't follow normal rules, so I cant say what an individual ones size is yet.
Pileated Snagret	148.1 kb	9.8 kb
Beady Long Legs	154.6 kb	15.3 kb	This is without any Spectralids, as Beady is in vanilla.
Egg	163.4 kb	2.8 kb	Including the 10 Mitites, they make eggs deceptively huge on memory.
Ranging/Toady Bloyster	176.2 kb	8.5 kb	Both bloysters are basically the same thing internally, and count as the same initial use
Man-at-Legs	180.5 kb	13.9 kb
Careening Dirigibug	192.2 kb	11.6 kb	Including the 3 bomb rocks it allocates per bug!
Honeywisp	206.6 kb	6.7 kb	Including the egg and the eggs Mitites!
Waterwraith	207.6 kb	15.1 kb	Including its tires
Armored Cannon Beetle Larva	222.8 kb	28.0 kb	Including 5 of the rock object per beetle! Also note that models/anims are shared for the 3 beetle larva enemies.
Buried Cannon Beetle Larva	222.8 kb	28.0 kb	Note above
Decorated Cannon Beetle	222.8 kb	28.0 kb	Note above
Raging Long Legs	330.4 kb	18.3 kb	This is with the 30 Mitites.
Emperor Bulblax	446.2 kb	11.8 kb
Empress Bulblax	541.3 kb	192.7 kb	Including 50 bulborb larva per-empress
Titan Dweevil	595.7 kb	53.6 kb
Segmented Crawbster	664.0 kb	8.1 kb	The biggest size award of all award

Credits: PikHacker