As I can see that was a hard one, that monster was from Sun vulcan.
I have to remind people about that I am not taking monsters from sentai shows who had not been subbed, but are also taking those who are on-going projects like bioman from GUIS:)

Next one is a easy one:
Hint: The show who got most recurring character!!

http://www.imageurlhost.com/images/8...mes821izdz.jpg

Gokaiger

Correct XW1n5t0nX, this card player of a monster with his deck of exploding cards appered in episode 10 and is named Yokubareed.

Next one is this dangerful kangaroo boxer, watch out for his spiky handsXD
Hint: Sonic X theme (jap)

http://www.imageurlhost.com/images/5...jkk8a7ecn5.jpg

Gaoranger?

Shinkenger? Psychic Lover did the theme so...

Phantom Stranger won this round:) It is from Hurricanger!!
This monster is named Kangaruretto The Disaster Ninja and appered in episode 20.
About the hint: Hideaki Takatori and his little helper Hironobu Kageyama sang the Hurricanger opening and sonic theme which is called "sonic drive"
http://en.wikipedia.org/wiki/Hideaki_Takatori or http://myanimelist.net/anime/1816/Sonic_X

Next one is up:
Hint: pigeons

http://www.imageurlhost.com/images/1...a35fydyprj.jpg

Timeranger

That is right XW1n5t0nX, that monster is from Timeranger, his name is Corrupted Officer Arnold-K and he appeared in episode 9:)
The pigeons are referred to those ones who are flying in the start of each episode when the opening theme startsXD

Next one is up:
Hint: sgtkira

http://i58.tinypic.com/1z5253p.jpg

GogoV