The Biclops is a grayish-brown, two headed giant standing 11+ feet tall. Each head has one large yellow eye. Presumably they are hybrids of Ettins and Cyclopskin, but they appear to have been rejected by both if this is true. They are filthy, disgusting creatures, not even speaking Common or Giant, but communicating through grunts and crude pantomime. They will devour anything organic, even rotting meat.

+14 Strength, +6 Constitution, +4 Wisdom, -4 Intelligence, -2 Charisma
Size Class: Large size. -1 penalty to Armor Class, -1 penalty on attack rolls, -4 penalty on Hide checks, +4 bonus on grapple checks, lifting and carrying limits double those of Medium characters. Space is 10', Reach is 10'.
Giant, giving them Low Light Vision
Base land speed 40 ft.
+7 Natural Armor Bonus.
Rock Throwing (Ex): The range increment is 120 feet for a Biclops' thrown rocks.
Superior Two Weapon Fighting (Ex): A Biclops fights with a club in each hand. Because each of its two heads controls an arm, the Biclops does not take a penalty on attack or damage rolls for attacking with two weapons. It may also throw two rocks, provided they are at the same target.
Racial Hit Dice: A Biclops begins with eleven levels of Giant, which provide 11d8 Hit Dice, a base attack bonus of +8, and base saving throw bonuses of Fort +8, Ref +3, and Will +3. A Biclops' Giant levels give it skill points equal to 16 (2 + Int modifier, minimum 1) and 4 Feats. Its class skills are Listen, Search, Spot, and Survival. A Biclops' two heads give it a +2 racial bonus on Listen, Spot, and Search checks. Biclops are proficient with all Simple Weapons, and Light and Medium Armor.
Jungle Giants have a Primary Slam attack doing 1d4 plus Strength Bonus. They get 2 Slam attacks with a Full Attack.
Automatic Languages: Giant. Bonus Languages: Common, any nearby humanoid race.
Level Adjustment: +5
Favored Class: Barbarian

Adulthood: 14
Barbarian, Rogue, Sorcerer: +1d4
Bard, Fighter, Paladin, Ranger: +1d6
Cleric, Druid, Monk, Wizard: +2d6

Middle Age: 30
Old: 45
Venerable: 60
Maximum Age: +2d10 years

Base Height: Male: 10 ft. Female: 9 ft.
Height Modifier: +2d4
Base Weight: Male: 4000 lbs Female: 3750 lbs.
Weight Modifier: x (2d8) lbs.

Biclops are pretty limited in scope. Really the only thing you have the mindset or skills for is a melee fighter of some kind.
Adventuring Race: Given their reduced mental faculties and the (well deserved) prejudice against them, it's a rare Biclops that goes adventuring (and even then it's prolly an all evil party).
Character Development: Go melee beatstick, you really aren't made for anything else.
Character Names:

You're pretty much despised by everyone, so there's a sizable chip on your shoulder. And don't you let anyone forget that for so much as a moment.
Personality: Biclops are the lowest of the low. Hated by virtually everyone, their lives are quick and brutal.
Behaviors: Biclops can eat anything organic, and spend all their time scrounging. Asleep during the day, they venture out at night.
Language: The Biclops communicate with a combination of grunts and mimicked animal sounds. It's rare for one to speak Giant or Common.

Virtually none, as most Biclops don't even qualify as being stone age primitives. It's an exceptional one who can even speak a language.
Alignment : Almost universally Chaotic Evil.
Lands : Usually the Biclops prefer mountain cave systems.
Settlements : Occasionally a Biclops or two finds it's way into the Underdark, but it isn't common.
Beliefs : Biclops typically worship Grolantor.
Relations: Other races are food. Most sane beings attack them on sight, because if they don't the Biclops will follow them awaiting an opportunity for ambush.

A young dragon of some sort has set himself up in a local cavern. Obviously you have to eat him before he eats you.
A local evil Giant clan has been trying to press the other giants into service for a fight against the local humans. As if you needed their help to kill humans...
A mage did something to you and now you have to follow his orders. So now you're part of something called a "brute squad" trying to figure out how you'll escape...

Biclops Racial Substitution Levels

Level 1: You do not get Wild Empathy.
Level 2: You have different options with Combat Mastery
Combat Mastery: You can also choose Hurler and Berserker. Hurler gains you the following Feats: Power Attack (1st), Brutal Throw (6th), and Power Throw (11th). If you choose the Berserker Path, you can Rage 1/day at 2nd Level, and an additional time per day at Levels 6 and 11.
Level 4: You do not get an Animal Companion. Instead you get Two Weapon Rend.
Two Weapon Rend (Ex): If you hit with both weapon attacks you Rend for double your normal weapon damage. If one of the hits is a confirmed critical, the opponent takes an additional +1d8 damage (+2d8 if the critical multiplier is x3).

Level 1: Replace Fast Movement with a +4 Racial Bonus on Intimidation Checks.

Level 1: You lose your 1st Level Bonus Feat. However, you are considered to have Two Weapon Fighting for purposes of qualifying for other Feats, nor do you need to meet hre Dexterity prerequisite for any Feat that requires Two Weapon Fighting