Lain Iwakura

Lain Iwakura (岩倉 玲音 Iwakura Rein) is the titular character of Serial Experiments Lain.

She is introduced as a shy Japanese girl in middle school at the beginning of the show.

She learns that she is an omnipotent Ai.

Appearance
Lain appears to be a 14-year-old girl and stands at a shorter height than most of the characters in the show. She has pale skin, brown eyes, brown hair. Her hair is short, left slightly above the shoulders and a long lock of hair on the left side of her face. She wears a red hair-clip throughout the show. The hair-clip is 'X' shaped and wraps the entire lock of hair securely.

Personality
Lain is quiet and doesn't talk much, which leads to her being a bit disconnected from people in contrast to the rest of her classmates, always dissociating herself from big crowds and is shown to be rather shy, but she likes her friend Arisu(Alice).

The Third Lain
Appearing in the fifth and the eighth episodes. Her half-lidded eyes and casual posture demonstrates a new more laid-back persona of Lain.

The Fourth Lain
Appearing in the final episode. It's not clear if she is another one of Lain's personas or her own entity. She appears more serene than the other personas.

Alice
Alice is the first to attempt to help Lain socialize by taking her to a nightclub, and from this point always tries to protect and take care of her.

Chisa
Chisa went to the same school as Lain and both were in the same grade. After her suicide, Chisa sent mail to her entire school including Lain. Lain responded to the mail and started to chat with Chisa about the Thug Hunters. This chat sparked Lain's interest of Thug Shaking. After the chat, Chisa appeared before Lain two times but disappeared each time before having a conversation with her.

Mika
At first, Mika seems to be judgmental and rude towards her younger sibling, Lain. After a while Mika seems to care and show more interest and became obsessed, leading to her downfall where she later loses her sanity.

Trivia

 * She was designed to look like her Japanese voice actress Kaori Shimizu. Her official birthday is 7 March, She is a pisces and her blood type is 0+