Aggron

Naming
Its name is probably composed of the words "aggressive" and "iron".

Biological characteristics
Aggron is best described as a monster. With iron plates over its entire body, horns, and claws, this Pokémon was built for battle.

Third generation
The only way to obtain one in Ruby/Sapphire/Emerald is to evolve a Lairon. The only way to obtain one in FireRed/LeafGreen is to trade from Ruby/Sapphire/Emerald.

Fourth generation
There are two ways to obtain one in Diamond/Pearl: Evolve a Lairon, or migrate from GBA games through Pal Park.

Attacks Learned
{| style="float: right; width: 300px; margin-left:0.5em" border="1" cellpadding="2" cellspacing="0" !colspan="2" bgcolor="#ffbfff"|Attacks (DP)
 * colspan="2" align="center" style="font-size: 80%"|
 * colspan="2" align="center" style="font-size: 80%"|
 * Start||Tackle
 * Start||Harden
 * Start||Mud-Slap
 * Start||Headbutt
 * Lv. 4||Harden
 * Lv. 8||Bite
 * Lv. 11||Headbutt
 * Lv. 15||Metal Claw
 * Lv. 18||Iron Defense
 * Lv. 22||Roar
 * Lv. 25||Take Down
 * Lv. 29||Iron Head
 * Lv. 34||Protect
 * Lv. 40||Metal Sound
 * Lv. 48||Iron Tail
 * Lv. 57||Double-Edge
 * Lv. 65||Metal Burst
 * Lv. 18||Iron Defense
 * Lv. 22||Roar
 * Lv. 25||Take Down
 * Lv. 29||Iron Head
 * Lv. 34||Protect
 * Lv. 40||Metal Sound
 * Lv. 48||Iron Tail
 * Lv. 57||Double-Edge
 * Lv. 65||Metal Burst
 * Lv. 40||Metal Sound
 * Lv. 48||Iron Tail
 * Lv. 57||Double-Edge
 * Lv. 65||Metal Burst
 * Lv. 57||Double-Edge
 * Lv. 65||Metal Burst
 * Lv. 65||Metal Burst
 * Lv. 65||Metal Burst

{| style="float: right; width: 300px; margin-left:0.5em" border="1" cellpadding="2" cellspacing="0" !colspan="2" bgcolor="#ffbfff"|TMs (DP)
 * colspan="2" align="center" style="font-size: 80%"|
 * colspan="2" align="center" style="font-size: 80%"|
 * 01||Focus Punch
 * 02||Dragon Claw
 * 03||Water Pulse
 * 05||Roar
 * 06||Toxic
 * 10||Hidden Power
 * 11||Sunny Day
 * 12||Taunt
 * 13||Ice Beam
 * 14||Blizzard
 * 15||Hyper Beam
 * 17||Protect
 * 18||Rain Dance
 * 21||Frustration
 * 22||Solarbeam
 * 23||Iron Tail
 * 24||Thunderbolt
 * 25||Thunder
 * 26||Earthquake
 * 27||Return
 * 28||Dig
 * 31||Brick Break
 * 32||Double Team
 * 34||Shock Wave
 * 35||Flamethrower
 * 37||Sandstorm
 * 38||Fire Blast
 * 39||Rock Tomb
 * 40||Aerial Ace
 * 42||Facade
 * 43||Secret Power
 * 44||Rest
 * 45||Attract
 * 52||Focus Blast
 * 56||Fling
 * 58||Endure
 * 59||Dragon Pulse
 * 65||Shadow Claw
 * 66||Payback
 * 68||Giga Impact
 * 69||Rock Polish
 * 71||Stone Edge
 * 72||Avalanche
 * 73||Thunder Wave
 * 76||Stealth Rock
 * 78||Captivate
 * 79||Dark Pulse
 * 80||Rock Slide
 * 82||Sleep Talk
 * 83||Natural Gift
 * 87||Swagger
 * 90||Substitute
 * 91||Flash Cannon
 * 38||Fire Blast
 * 39||Rock Tomb
 * 40||Aerial Ace
 * 42||Facade
 * 43||Secret Power
 * 44||Rest
 * 45||Attract
 * 52||Focus Blast
 * 56||Fling
 * 58||Endure
 * 59||Dragon Pulse
 * 65||Shadow Claw
 * 66||Payback
 * 68||Giga Impact
 * 69||Rock Polish
 * 71||Stone Edge
 * 72||Avalanche
 * 73||Thunder Wave
 * 76||Stealth Rock
 * 78||Captivate
 * 79||Dark Pulse
 * 80||Rock Slide
 * 82||Sleep Talk
 * 83||Natural Gift
 * 87||Swagger
 * 90||Substitute
 * 91||Flash Cannon
 * 69||Rock Polish
 * 71||Stone Edge
 * 72||Avalanche
 * 73||Thunder Wave
 * 76||Stealth Rock
 * 78||Captivate
 * 79||Dark Pulse
 * 80||Rock Slide
 * 82||Sleep Talk
 * 83||Natural Gift
 * 87||Swagger
 * 90||Substitute
 * 91||Flash Cannon
 * 79||Dark Pulse
 * 80||Rock Slide
 * 82||Sleep Talk
 * 83||Natural Gift
 * 87||Swagger
 * 90||Substitute
 * 91||Flash Cannon
 * 87||Swagger
 * 90||Substitute
 * 91||Flash Cannon
 * 90||Substitute
 * 91||Flash Cannon
 * 91||Flash Cannon