Naruto Shippunden

There are 9 demons (known as bijuus) in naruto anime. The demon have tremendous flow of chakra. For now in anime only few of it exposed(in gaara and naruto). How about another bijuus? here I list all the bijuus(some picture might not accurate as the real picture but i hope give you some idea).
The nine tail demon is taken from the Japan legend. n the ancient Japan, according to the legend, each elemental god was sealed into an elemental shrine. Out of the 9 Bijuu, 5 of them were elemental gods, those being Shukaku, of the Wind; Kyuubi, of Fire; Isonade, of Water; Raijuu, of Lightning, and Kaku of Earth.
In the Legend of the Tailed Beasts, the 5 elemental gods were sealed with instruments called “The Tools of Power” (法器). Not all of them are known, and their translation may be not accurate, but all resemble a type of varied container (kettle, prison, altar, etc.)


shukaku(one tail)

shukaku has one tail and it is a racoon dog. Shukaku was merged into Gaara when he was born. It is able to manipulate the special sand within Gaara's gourd without Gaara needing to control it. The sand can block all incoming attacks that it can react to. The sand can also be controlled by Gaara to form a shell around him or to attack. Shukaku seems to want blood and demands that Gaara kill for sustenance. Gaara believes Shukaku's spirits to be his mother's. A side-effect of having Shukaku within him Gaara is not allowed to sleep; if he does Shukaku will take over him and reform itself out of sand around Gaara as seen during the invasion of Konoha at the end of the Chuunin exams. Much like Naruto the citizens of the Sand Village ignore and try to avoid Gaara, mostly out of fear. Later on, the Shukaku is extracted from Gaara resulting in his death. However, a combination of Chiyo's jutsu and Naruto's chakra brought him back to life. The Shukaku is currently in the hands of the Akatsuki.


Nibi(2 tails)

Nibi is a 2-tailed cat with firebreathing powers. Nibi's Jinchuuriki is a girl named Yugito from the Village of Cloud. She is the second strongest ninja in her village and she has the ability to transform completely into the two tailed demon cat almost at will. The demon cat can shoot fireballs from her mouth at her opponent. Yugito seems to be like what Gaara was to the Sand Village, the trump card of the Hidden Cloud. Unlike Gaara and Naruto, she doesn't seem to have problem with people around her. This hints that the demon in her isn't hated by everyone and she is viewed by others how the Hokage wants everyone to view Naruto. Yugito gets captured by the Akatsuki, just like Gaara, so they can extract the Bijuu out of her.



Sanbi (3 tail)
The three-tailed beast is a gigantic, turtle-like demon. The abilities of this creature, at the moment, are unknown. Sanbi is extremely large and also has great speed. What makes the Sanbi unique from the other demons, is that it does not have a host and it doesn't seem to have any sign of intelligence. According to Deidara of Akatsuki, not having a host makes it weaker because it isn't intelligent enough to control its own strength.



Yonbi (4 tail)

Other than the fact that this demon has four tails, nothing much else is known, not even what animal it is. The host of this demon was an ederly man. He can be recognized by dark marks under his eyes, most likely from the demon. This man uses many elemental fusion techniques when battling, which could be some of the powers from the demon. This 4-tailed creature was captured by the Akatsuki after Kisame killed its
host.


Gobi no Houkou (5 tail)

This demon still not known in the episode and manga but lets take a look according to the japanese legend.
Houkou is a bijuu which looks like a five-tailed dog. Each tail of this creature represents one elemental power: Wind, Water, Earth, Lightning and Fire. They can cause catastrophic damage when used. Houkou will willingly destroy the nature to obtain the power he desires from these elements. He was once badly injured when he and Nekomata challenged Kyuubi. Strangely enough, he is the god of Illusion. Houkou lives in a giant, ancient tree.



Rokubi no Raijuu (6 tail)

This demon still not known in the episode and manga but lets take a look according to the japanese legend.
Raijuu, a bijuu in the form of weasel, has four legs and very sharp claws. Its cry sounds like thunder. It was originally the god of Thunder, but because of Yamata no Orochi’s power, it was transformed into a beast. Raijuu can release a huge amount of eletricity for battle assistance.



Shichibi no Kaku (7 tail)

This demon still not known in the episode and manga but lets take a look according to the japanese legend.
Tale in the Legend of the Tailed Beasts： Kaku is a bijuu in the form of badger. Its Kanji is also read as Mujina, which is the name the Japanese subspecies of badger (Meles Meles Anaguma) receives in some parts of Japan. It has seven tails, and is the smallest bijuu out of the nine; though it is the most cunning and stealthy. Kaku hunts its prey underground most of the time. It kills by crumbling/destroying the piece of land that is under its target, making it fall right into his open mouth. Above land, whenever he is around he can transform into any type of creature, but he is unable to do it if he doesn’t have clay.

Hachibi (8 tails) and killer bee

First Manga Appearance: Chapter 408
First Anime Appearance: Still no appearance -can't wait
Hidden Village: Cloud
Rank: Unknown (Probably Jounin)
Bijuu: Eight-Tailed Demon Ox-Cephalopod
Power: Mini-Hachibi form ~ protective Hachibi chakra taking ox-cephalopod form, gigantic chakra and power boost to Bee


INFO:
Akatsuki has yet to find and seal two Jinchuuriki: Naruto and the Hachibi Bijuu named Kiraa Bii (Killer Bee). After Uchiha Madara swayed Sasuke to his side, he sent the young man after this Bijuu. They eventually found the Cloud ninja training in the mountains. Killer Bee is marked by a tattoo of "iron" on his shoulder and bull horns on his cheek. He also wields eight swords, taking the form of seven real swords and a tailed state form. He posseses the ability to become his Bijuu, that of a tentacled ox beast. He was eventually knocked out by Sasuke's Amaterasu and taken for sealing. His body was revealed as a transformed tentacle, while the real Bee was still safe in Lightning. This allowed Bee to escape capture and evade Akatsuki.

Appearance
This tattoo is worn on the left cheek of Killer Bee. The tattoo is that of ox horns, but it also resembles octopus arms. Together they are the two animals of his bijuu, an Ushi-Oni.

Other features which cause him to resemble a cephalopod are the two strands hanging from his belt, which resemble squid tentacles.


Killer Bee maintains a high level of control over his Jinchuuriki-Bijuu form. With chakra emanating from out of his body, a cloak and cephalopod arm-tails will form. These tails will form their own individual chakra tails, and also individually envelope his ropes strands and scarf. In total he will have five pure chakra tails and three chakra tails covering his clothing. He can also use two of the pure chakra tails as ox horns in his Rariatto technique, to barrel through his foes.

Killer Bee maintains a high level of control over his Jinchuuriki-bijuu form. After calling forth the Hachibi, Killer Bee will take on the beast's full appearance. In this form Killer Bee is able to emit a dark compressed chakra blast, which is capable of blasting through most anything.

Manga Appearance:

additional info:
Hachibi no Hachimata (8 tail)on japanese legend(not on naruto episode
Hachibi no Hachimata, takes the form of a snake in Japanese mythology. This demon has not featured in the Naruto series as of yet.
lets take a look to the legend:
Yamata no Orochi(the real name according to the legend) is a Snake bijuu. It has crimsom red eyes, eight heads and eight tails (also depicted to having trees and vines growing around them) and has the power of the Demon world, a symbol of evil. Each head of Yamata no Orochi represents a symbol: Soul, Ghost, Evil, Devil, Monstrous, Kill, The Afterworld and Death.
Its powers were originally weak, the members of the Kusanagi clan, when attacking it, acted carelessly, using the legendary sword Kusanagi no Tsurugi (Oro’s sword). Because of that, as a consequence, Yamata no Orochi takes the sword from them, absorbing the power contained inside, and becoming an incredibly powerful creature, and finally storing it in its body.
With the new power, Yamata no Orochi releases an insane amount of dark energy, awakening the other Bijuu and becoming arrogant. Yamata no Orochi proceeds to defeat many of the Bijuu, but when it battles with Kyuubi, it is defeated. The cause of this is simple: Kyuubi has an unlimited amount of power, making even a hole in the Kusanagi sword. As this happens, it shows how tremendously powerful Kyuubi is, deserving of the “King of Bijuu” title. Not even Sarutobi and Enma (I’m not sure how those two are into the legend) could scratch the Kusanagi no Tsurugi. (That makes connections to the Oro x Sandaime battle)
Legend also depicted it as having a power able to rival Kyuubi’s [in quality], but the fact is, Yamata no Orochi’s does have a limit.

Kyuubi the 9-tailed

Kyuubi is the 9-tailed fox sealed within Naruto. This Bijuu attacked the village of Konoha 12 years nearly destroying the village and all its inhabitants. The 4th Hokage sacrificed himself, using a technique known only to him and the 3rd Hokage, and sealed Kyuubi in an infant named: Naruto. Because of the Kyuubi, the villagers ignored Naruto and viewed him as a nuisance leaving him sad and alone. The power of the Kyuubi is so great that when Naruto is cut or wounded chakra leaks from the wound and heals it almost instantly. Naruto is able tap into Kyuubi's power by begging it to let him borrow Chakra. When Naruto becomes enraged the Kyuubi takes over his body and forms a Kyuubi-shaped shell of red Chakra around Naruto.