CLAMP

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The four women who make up the manga group CLAMP (Ohkawa Nanase, the scriptwriter; Mokona Apapa, the lead artist; Igarashi Satsuki, the layout designer; and Nekoi Tsubaki, the character artist) are to manga (and manga turned into anime) what Megumi Hayashibara is to voice acting. They began as doujinshi artists but went pro in 1989 with RG Veda. The original doujinka group was actually ten members (one of whom was a guy), but six of them left (one in 1990, two in 1992, and three in 1993), resulting in the four-woman team we know today. That Other Wiki has a little more information on their contributions and accomplishments since in CLAMP's article.

Since RG Veda, nearly all of their work has been animated, a list which includes many of the staple series of anime.

A theme that runs through CLAMP's works is that love transcends everything, particularly that pesky little thing called gender. Note that this is not a "love conquers all" kind of thing, as gender/age/being a robot/being a ruthless assassin/etc can be insurmountable barriers to having a functional relationship. No barrier can stop people from falling in love but it may very well prevent that love from reaching a happy resolution. (See the relationship between Tomoyo and Sakura in Cardcaptor Sakura, or the one between Sakurazuka Seishirou and Sumeragi Subaru in Tokyo Babylon and X, or between Kazuhiko and Suu (or Ora) in Clover as prime examples.)

Their manga work is characterized by a highly-detailed Shojo art style, though for budget reasons the designs are often simplified for animation. Their style underwent a noticeable change in the late 1990s when Mokona starting ceding more design responsibility to Igarashi and Nekoi. Nekoi's distinctive character designs are responsible for the "Noodle People" description common in fandom. CLAMP also errs on the shojo side thematically (despite being published in an unusually wide range of magazines), and thus are very prone to drama and painful family unfriendly or broken aesops. Being former doujinka, their work is also notable for a deliberately high degree of Fan Service and Fetish Fuel.

A quick note about the members of CLAMP: In July of 2004, they all changed their pen names slightly. Mokona Apapa became simply Mokona, Ohkawa Nanase became Ohkawa Ageha, Nekoi Mikku became Nekoi Tsubaki. Igarashi Satsuki simply switched her family name into hiragana, and her given name into kanji. Nekoi and Mokona had been wanting to change their pen names for awhile; Ohkawa and Igarashi just went along for the hell of it. Ohkawa has since reverted to Ohkawa Nanase for attributions. At least three of them have used their names (partially or entirely) for characters in series: Satsuki as Yatouji Satsuki in X, Nekoi as Nekoi Yuzuriha in X, and Mokona as Mokona in Magic Knight Rayearth, Tsubasa Reservoir Chronicle, and ×××HOLiC.

Some of their works:
CLAMP provides examples of the following tropes: