Meet The Jockey

[Victoreem the V of doom 30]

http://xbox360.ign.com/dor/objects/14352241/left-4-dead-2/videos/lfd2_gmp_slide_90409.html

"Valve is also unveiling a new Boss infected monster coming in the full version of Left 4 Dead 2. Known as "The Jockey" this is the third new Boss infected from L4D2 revealed thus far (the Charger was revealed at E3, The Spitter at Comic Con). The Jockey lets you attack lone Survivors and wrestle control of their movement away from them-into fire, off ledges, or straight into the middle of a zombie horde."

"I encountered some of the sequel's newness when the Jockey pounced on my character's back. This new special zombie announces its presence with a tell-tale snicker before it leaps on a victim's back. It rode Rochelle away from allies, thwacking her with a free hand as it went. The player can try to steer in a better direction, but can't outright resist where the Jockey drives them. Later, a Jockey would pounce on Coach, Faliszek's character for the session, driving him across distant rooftops until one of us shot the zombie down."

"a Jockey may intentionally steer a player's character into the spot where a Spitter just spat. They team up so that you're more likely to lose."

http://xbox360.ign.com/dor/objects/14352241/left-4-dead-2/videos/lfd2_gmp_highwayfirekatana_90409.html

and a better look at the spitter ingame + katana

"The sequel-debuting "uncommon common" zombies will provide another new challenge. Some might be bulletproof in the front... or fireproof... or short with more health... or in clown get-up and wearing squeaky shoes that attract more zombies."

Axe him a question