-sama:

In modern Japanese, an indication that the speaker holds the one spoken about in very high esteem. Can also be used facetiously (like Wakaba toward Utena) to indicate that the speaker has a crush on the subject.

-san:

An honorific indicating a neutral distance between speaker and subject. Connotes a "working" familiarity with the subject, but not usually camaraderie or intimacy. -san is normally not used toward male social inferiors.

-chan:

A diminutive, this indicates not familiarity and often some degree of affection. The "little" connotation means this term is frequently applied to children, especially female ones.

-kun:

Used toward social equals or inferiors with whom one is more intimate than "-san". Most commonly used toward males. Examples include Utena toward Miki and Touga toward Utena.

-sensei:

Means teacher, master, instructor, physician, etc. Used to address people in such respected occupation.

-senpai/-sempai:

Means senior, superior, elder, predecessor, old-timer, etc. You use it to address people who joined in your social class earlier than you did, regardless of age or social superiority, to indicate some degree of due respect. In Shoujo Kakumei Utena, Utena calls Juri by "-sempai."

Basically, we adopt the letter-by-letter romanization in spelling Japanese names such as: "Tenjou Utena", "Kiryuu Touga", "Saionji Kyouichi." We do not follow this rule for a few names:

Himemiya Anthy:

This is the official spelling. "Anthy" is the Greek word for "flowery."

Ohtori Academy:

We decided to spell "Ohtori" to keep consistent with the visual you will see in later episodes.

Kaoru Miki/Micky:

Both "Miki" and "Micky" are used, and they clearly sound different in Japanese. "Micky" is his nickname, and it is the official spelling on the laser disc covers and other sources.

Arisugawa Juri:

Although the official spelling is "Jury," we decided to spell her name "Juri" instead since "Jury" seemed out of place.