Infinite HP (in battle)-01FF16D0
Infinite HP-019947D3
No Random Battles-01033CD1
Infinite Money-019947D3
To get Mew-0115D8CF
Infinite energy (PP) for all Pokémon-01FF16D0
Start with Mew:
01151ED1 
Free Master Balls in any Pokemart:
01017CCF 
Fight Mew in every battle:
0115D8CF 
Fight selected Pokemon in every battle:
01??D8CF
At times, the select Pokemon will be blurred, but proceed to the battle as usual. If the Pokemon and caught and used, it will not appear blurred. The level of the Pokemon should be the level the normal Pokemon would be at if obtained without the code. ?? corresponds to the following values.

00: ????
01: Rhydon
02: Kangaskhan
03: Nidoran Male
04: Clefairy
05: Spearow
06: Voltorb
07: Nidoking
08: Slowbro
09: Ivysaur
0A: Exeggcutor
0B: Lickitung
0C: Exeggcute
0D: Grimer
0E: Gengar
0F: Nidoran Female
10: Nidoqueen
11: Cubone
12: Rhyhorn
13: Lapras
14: Arcanine
15: Mew
16: Gyarados
17: Shellder
18: Tentacool
19: Gastly
1A: Scyther
1B: Staryu
1C: Blastoise
1D: Pinsar
1E: Tangela
1F: No Pokemon Labeled As Missingno
20: Missingno
21: Growlithe
22: Onix
23: Fearow
24: Pidgey
25: Slowpoke
26: Kadabra
27: Graveler
28: Chansey
29: Machoke
2A: Mr. Mime
2B: Hitmonlee
2C: Hitmonchan
2D: Arbok
2E: Parasect
2F: Psyduck
30: Drowzee
31: Golem
32: Missingno
33: Magmar
34: Missingno
35: Electabuzz
36: Magneton
37: Koffing
38: Missingno
39: Mankey
3A: Seel
3B: Diglett
3C: Tauros
3D: Missingno
3E: Missingno
3F: Missingno
40: Farfetch'd
41: Venonat
42: Dragonite
43: Missingno
44: Missingno
45: Missingno
46: Dodou
47: Poliwag
48: Jynx
49: Moltres
4A: Articuno
4B: Zapdos
4C: Ditto
4D: Meowth
4E: Krabby
4F: Missingno
50: Missingno
51: Missingno
52: Vulpix
53: Ninetales
54: Pikachu
55: Raichu
56: Missingno
57: Missingno
58: Dratini
59: Dragonair
5A: Kabuto
5B: Kabutops
5C: Horsea
5D: Seadra
5E: Missingno
5F: Missingno
60: Sandshrew
61: Sandslash
62: Omanyte
63: Omastar
64: Jigglypuff
65: Wigglytuff
66: Eevee
67: Flareon
68: Jolteon
69: Vaporeon
6A: Machop
6B: Zubat
6C: Ekans
6D: Paras
6E: Poliwhirl
6F: Poliwrath
70: Weedle
71: Kakuna
72: Beedrill
73: Missingno
74: Dodrio
75: Primeape
76: Dugtrio
77: Venomoth
78: Dewdong
79: Missingno
7A: Missingno
7B: Caterpie
7C: Metapod
7D: Butterfree
7E: Machamp
7F: Missingno
80: Golduck
81: Hypno
82: Golbat
83: Mewtwo
84: Snorlax
85: Magikarp
86: Missingno
87: Missingno
88: Muk
89: Missingno
8A: Kingler
8B: Cloyster
8C: Missingno
8D: Electrode
8E: Clefable
8F: Weezing
90: Persian
91: Marowak
92: Missingno
93: Haunter
94: Abra
95: Alakazam
96: Pidgeotto
97: Pidgeot
98: Starmie
99: Bulbasaur
9A: Venusaur
9B: Tentacruel
9C: Missingno
9D: Goldeen
9E: Seaking
9F: Missingno
A0: Missingno
A1: Missingno
A2: Missingno
A3: Ponyta
A4: Rapidash
A5: Rattata
A6: Raticate
A7: Nidorino
A8: Nidorina
A9: Geodude
AA: Porygon
AB: Aerodactyl
AC: Missingno
AD: Magnemite
AE: Missingno
AF: Missingno
B0: Charmander
B1: Squirtle
B2: Charmeleon
B3: Wartortle
B4: Charizard
B5: Missingno
B6: Missingno
B7: Missingno
B8: Missingno
B9: Odish
BA: Gloom
BB: Vileplume
BC: Bellsprout
BD: Weepinbell
BE: Victreebel
BF: The rest are glitchesPokèmon
Misc. Codes1Infinite HP (In Battle)01FF16D02No Random Battles01033CD13Infinite Money019947D3
019948D3
019949D31st Pokèmon In Battle Codes
Infinite PP (1st Position)01282DD0
Infinite PP (2nd Position)01282ED0
Infinite PP (3rd Position)01282FD0
Infinite PP (4th Position)012830D0
Skill Modifier (1st Position)01??1CD0
Skill Modifier (2nd Position)01??1DD0
Skill Modifier (3rd Position)01??1ED0
Skill Modifier (4th Position)01??1FD0
1st Pokèmon Out Of Battle Codes
Infinite PP (1st Position)01FF88D1
Infinite PP (2nd Position)01FF89D1
Infinite PP (3rd Position)01FF8AD1
Infinite PP (4th Position)01FF8BD1
Skill Modifier (1st Position)01??73D1
Skill Modifier (2nd Position)01??74D1
Skill Modifier (3rd Position)01??75D1
Skill Modifier (4th Position)01??76D1
Level Modifier01??8CD1
Max HP Modifier (Smaller)01??8ED1
Max HP Modifier (Larger)01??8DD1
Max Attack Modifier (Smaller)01??90D1
Max Attack Modifier (Larger)01??8FD1
Max Defense Modifier (Smaller)01??92D1
Max Defense Modifier (Larger)01??91D1
Max Speed Modifier (Smaller)01??94D1
Max Speed Modifier (Larger)01??93D1
Max Special Modifier (Smaller)01??96D1
Max Special Modifier (Larger)01??95D1
Item Codes31Total Item Number Modifier [Note 1]01??1DD332
Item Modifier 1st Position 01??1ED3
Infinite Quantity 1st Position 01631FD3
Item Modifier 2nd Position 01??20D3
Infinite Quantity 2nd Position 016321D3
Item Modifier 3rd Position 01??22D3
Infinite Quantity 3rd Position 016323D3
Item Modifier 4th Position 01??24D3
Infinite Quantity 4th Position 016325D3
Item Modifier 5th Position 01??26D3
Infinite Quantity 5th Position 016327D3
Item Modifier 6th Position 01??28D343
Infinite Quantity 6th Position 016329D3
Item Modifier 7th Position 01??2AD3
Infinite Quantity 7th Position 01632BD3
Item Modifier 8th Position 01??2CD3
Infinite Quantity 8th Position 01632DD3
Item Modifier 9th Position 01??2ED3
Infinite Quantity 9th Position 01632FD3
Item Modifier 10th Position 01??30D3
Infinite Quantity 10th Position 016331D3
Quantity Digits to Accompany Item Modifier Codes
00 - ?????
01 - Master Ball
02 - Ultra Ball
03 - Great Ball
04 - Pokè Ball
05 - Town Map
06 - Vicycle
07 - Surf Without Pokemon
08 - Safari Ball
09 - Pokè-Dex
0A - Moon Stone
0B - Antidote
0C - Burn Heal
0D - Ice Heal
0E - Awakening
0F - Parlyz Heal
10 - Full Restore
11 - Max Potion
12 - Hyper Potion
13 - Super Potion
14 - Potion
15 - Boulder Badge
16 - Cacade Badge
17 - Thunder Badge
18 - Rainbow Badge
19 - Soul Badge
1A - Marsh Badge
1B - Volcano Badge
1C - Earth Badge
1D - Escape Rope
1E - Repel
1F - Old Amber
20 - Fire Stone
21 - Thunder Stone
22 - Water Stone
23 - HP Up
24 - Protein
25 - Iron
26 - Carbos
27 - Calcium
28 - Rare Candy
29 - Dome Fossil
2A - Helix Fossil
2B - Secret Key
2C - ?????
2D - Bike Voucher
2E - X Accuracy
2F - Leaf Stone
30 - Card Key
31 - Nugget
32 - PP Up
33 - Pokè Doll
34 - Full Heal
35 - Revive
36 - Max Revive
37 - Grand Special
38 - Super Repel
39 - Max Repel
3A - Dire Hit
3B - Coin
3C - Fresh Water
3D - Soda Pop
3E - Lemonade
3F - S.S. Ticket
40 - Gold Teeth
41 - X Attack
42 - X Defend
43 - X Speed
44 - X Special
45 - Coin Case
46 - Oak's Parcel
47 - Item Finder
48 - Silph Scope
49 - Pokè Flute
4A - Lift Key
4B - Exp. All
4C - Old Rod
4D - Good Rod
4E - Super Rod
4F - PP Up
50 - Ether
51 - Max Ether
52 - Elixer
53 - Max Elixer
Quantity Digits to Accompany Skill Modifier Codes
00 - Nothing
01 - Pound
02 - Karate Chop
03 - Double Slap
04 - Comet Punch
05 - Mega Punch
06 - Pay Day
07 - Fire Punch
08 - Ice Punch
09 - Thunder Punch
0A - Scratch
0B - Vice Grip
0C - Guillotine
0D - Razor Wind
0E - Swords Dance
0F - Cut
10 - Gust
11 - Wing Attack
12 - Whirl Wind
13 - Fly
14 - Bird
15 - Slam
16 - Vine Whip
17 - Stomp
18 - Double Kick
19 - Mega Kick
1A - Jump Kick
1B - Rolling Kick
1C - Sand Attack
1D - Head Butt
1E - Horn Attack
1F - Fury Attack
20 - Horn Drill
21 - Tackle
22 - Body Slam
23 - Wrap
24 - Take Down
25 - Thrash
26 - Double Edge
27 - Tail Whip
28 - Poison Sting
29 - Twin Edle
2A - Pin Missile
2B - Leer
2C - Bite
2D - Growl
2E - Roar
2F - Sing
30 - Supersonic
31 - Sonicboom
32=disable
33 - Acid
34 - Ember
35 - Flamethrower
36 - Mist
37 - Water Gun
38 - Hydro Pump
39 - Surf
3A - Ice Beam
3B - Blizzard
3C - Psybeam
3D - Bubblebeam
3E - Aurora Beam
3F - Hyper Beam
40 - Peck
41 - Drill Peck
42 - Submission
43 - Low Kick
44 - Counter
45 - Seismic Toss
46 - Strength
47 - Absorb
48 - Mega Drain
49 - Leech Seed
4A - Growth
4B - Razor Leaf
4C - Solar Beam
4D - Poisonpowder
4E - Stun Spore
4F - Sleep Powder
50 - Petal Dance
51 - String Shot
52 - Dragon Rage
53 - Fire Spin
54 - Thundershock
55 - Thunderbolt
56 - Thunder Wave
57 - Thunder
58 - Rock Throw
59 - Earthquake
5A - Fissure
5B - Dig
5C - Toxic
5D - Confusion
5E - Psychic
5F - Hypnosis
60 - Meditate
61 - Agility
62 - Quick Attack
63 - Rage
64 - Teleport
65 - Night Shade
66 - Mimic
67 - Screech
68 - Double Team
69 - Recover
6A - Harden
6B - Minimize
6C - Smoke Screen
6D - Confuse Ray
6E - Withdraw
6F - Defense Curl
70 - Barrier
71 - Light Screen
72 - Haze
73 - Reflect
74 - Focus Energy
75 - Hide
76 - Metronome
77 - Mirror Move
78 - Selfdestruct
79 - Egg Bomb
7A - Lick
7B - Smog
7C - Sludge
7D - Bone Club
7E - Fire Blast
7F - Waterfall
80 - Clamp
81 - Swift
82 - Skull Bash
83 - Spike Cannon
84 - Constrict
85 - Amnesia
86 - Kinesis
87 - Softboiled
88 - Hi Jump Kick
89 - Glare
8A - Dream Eater
8B - Poison Gas
8C - Barrage
8D - Leech Life
8E - Lovely Kiss
8F - Sky Attack
90 - Transform
91 - Bubble
92 - Dizzy Punch
93 - Spore
94 - Flash
95 - Psywave
96 - Splash
97 - Acid Armor
98 - Crabhammer
99 - Exposion
9A - Fury Swipes
9B - Bonemerang
9C - Rest
9D - Rock Slide
9E - Hyper Fang
9F - Sharpen
A0 - Conversion
A1 - Tri Attack
A2 - Super Fang
A3 - Slash
A4 - Substitute
A5 - Struggle