Final byte in enemy structure... what is this used for?

Abstract Art	50
Annoying Old Party Man	50
Annoying Reveler	50
Arachnid!	50
Arachnid!!!	50
Armored Frog	50
Atomic Power Robot	50
Attack Slug	50
Bad Buffalo	0
Beautiful UFO	50
Big Pile of Puke	50
Big Pile of Puke	50
Bionic Kraken	50
Bionic Kraken	50
Black Antoid	50
Black Antoid	50
Boogey Tent	0
Boogey Tent	0
Bubble Monkey	50
Buzz Buzz	50
Captain Strong	0
Carbon Dog	0
Carbon Dog	0
Care Free Bomb	50
Cave Boy	50
Cave Boy	50
Chomposaur	0
Chomposaur	0
Clumsy Robot	0
Clumsy Robot	0
Clumsy Robot	0
Coil Snake	50
Conducting Menace	50
Conducting Spirit	50
Cop	50
Cranky Lady	50
Crazed Sign	50
Crested Booka	50
Criminal Caterpillar	10
Crooked Cop	0
Cute Li'l UFO	50
Dali's Clock	0
Deadly Mouse	50
Demonic Petunia	0
Dept. Store Spook	0
Dept. Store Spook	0
Desert Wolf	50
Diamond Dog	0
Diamond Dog	0
Dread Skelpion	50
Dungeon Man	50
Ego Orb	0
Elder Batty	0
Electro Specter	0
Electro Specter	0
Electro Swoosh	50
Enraged Fire Plug	50
Even Slimier Little Pile	50
Everdred	0
Everdred	0
Evil Elemental	0
Evil Eye	20
Evil Mani-Mani	0
Evil Mani-Mani	0
Extra Cranky Lady	50
Farm Zombie	0
Fierce Shattered Man	0
Filthy Attack Roach	0
Final Starman	50
Final Starman	50
Flying Man	50
Fobby	50
Foppy	50
Foppy	50
Frank	0
Frankystein Mark II	0
Frankystein Mark II	0
French Kiss of Death	50
Ghost of Starman	50
Ghost of Starman	50
Gigantic Ant	50
Gigantic Ant	50
Giygas	0
Giygas	0
Giygas	0
Giygas	0
Giygas	0
Giygas	0
Great Crested Booka	50
Gruff Goat	0
Guardian Digger	0
Guardian Digger	0
Guardian General	0
Guardian General	0
Guardian Hieroglyph	50
Handsome Tom	50
Hard Crocodile	50
Heavily Armed Pokey	0
Heavily Armed Pokey	0
Heavily Armed Pokey	0
Heavily Armed Pokey	95
High-class UFO	50
Hostile Elder Oak	50
Hyper Spinning Robo	50
Insane Cultist	50
Insane Cultist	50
Kiss of Death	50
Kraken	50
Kraken	50
Lesser Mook	50
Lethal Asp Hieroglyph	50
Li'l UFO	50
Loaded Dice	50
Loaded Dice	50
Mad Duck	50
Mad Taxi	50
Magic Butterfly	0
Major Psychic Psycho	50
Manly Fish	50
Manly Fish's Brother	50
Marauder Octobot	50
Master Barf	0
Master Barf	0
Master Belch	0
Master Belch	0
Master Belch	0
Master Criminal Worm	10
Mechanical Octobot	50
Mighty Bear	50
Mighty Bear Seven	50
Military Octobot	50
Mini Barf	50
Mobile Sprout	50
Mole Playing Rough	50
Mondo Mole	0
Mondo Mole	0
Mook Senior	50
Mostly Bad Fly	50
Mr. Batty	0
Mr. Carpainter	0
Mr. Carpainter	0
Mr. Molecule	50
Musica	50
my pet	50
Mystical Record	50
New Age Retro Hippie	50
No Good Fly	50
Noose Man	50
Nuclear Reactor Robot	50
Over Zealous Cop	0
Petrified Royal Guard	0
Picky	50
Pit Bull Slug	50
Plague Rat of Doom	0
Plague Rat of Doom	0
Plain Crocodile	0
Pogo Punk	50
Pokey	50
Psychic Psycho	50
Putrid Moldyman	50
Ramblin' Evil Mushroom	50
Ranboob	50
Red Antoid	50
Robo-pump	50
Robo-pump	50
Rowdy Mouse	50
Runaway Dog	50
Runaway Dog	50
Scalding Coffee Cup	50
Sentry Robot	50
Shattered Man	0
Shrooom!	0
Shrooom!	0
Skate Punk	0
Skelpion	0
Slimy Little Pile	50
Smelly Ghost	50
Smilin' Sam	50
Smilin' Sphere	50
Soul Consuming Flame	0
Spinning Robo	50
Spiteful Crow	50
Squatter Demon	50
Squatter Demon	50
Starman	50
Starman	50
Starman Deluxe	0
Starman Deluxe	0
Starman Junior	50
Starman Super	50
Starman Super	50
Stinky Ghost	0
Strong Crocodile	0
Struttin' Evil Mushroom	50
Struttin' Evil Mushroom	50
Super Plush Bear	50
Tangoo	50
Tangoo	50
Teddy Bear	50
Territorial Oak	50
Thirsty Coil Snake	50
Thunder and Storm	0
Thunder and Storm	0
Thunder Mite	50
Tiny Li'l Ghost	50
Titanic Ant	0
Titanic Ant	0
Tony	50
Tough Guy	0
Tough Mobile Sprout	50
Trick or Trick Kid	50
Trillionage Sprout	0
Trillionage Sprout	0
Ultimate Octobot	50
Unassuming Local Guy	50
Uncontrollable Sphere	50
Urban Zombie	50
Urban Zombie	50
Violent Roach	0
Wetnosaur	0
Whirling Robo	50
Wild 'n Wooly Shambler	50
Wooly Shambler	50
Worthless Protoplasm	50
Yes Man Junior	50
Zap Eel	50
Zombie Dog	50
Zombie Possessor	0
|'s Nightmare	0
|'s Nightmare	0