Harvey is generally honest, a little dim, 6'6", and has large wings growing out of his back, genetically inherited from his father.
Birdman was seemingly killed in the series finale when run over by a bus, but turns out to be a clone of him created in the penultimate episode as he appears in the epilogue movie.
His name in Harvey Birdman, Attorney at Law is a play on these words (Falcon Seven = Phil Ken Sebben).
He co-founded the firm with twin brother Bill when they were twenty-six years old, the two only told apart by having their eyepatches on opposite eyes.
These same flashbacks also show that he believes his eyepatch not to be his most noticeable physical characteristic, but rather an embarrassing scar which he received from a broken binder clip (which he grew his mustache to cover).
He has numerous vision problems; it is implied that he is blind in the eye not covered by his eyepatch, and he states that he "sees everything 3 feet to the left" of where they really are, and must account for this fact.
Avenger sits on a perch on Harvey's desk and sleeps in a canary cage in the office at night.
Avenger is badly hindered by his inability to speak, even though it is clear that he can understand, or at least perceive the meaning in, the speech of other characters.
He has various psychic powers including: teleportation, telepathy, hypnotism, precognition, and telekinesis—all referred to as "mind taking"—but he rarely uses them for anything beyond sophomoric mischief.
He has been given the personality of a cocky and flamboyant stage magician; because of this, he often predicts the result of the cases he presides over before they have even started.
During his time on Earth, Mentok has worked as a mufti, a genie, a sex trade worker, a Cossack, and an E.S.T.
His main catchphrase is "Booweeoop" to give the impression of eerie sci-fi theremin music and is said whilst moving his hands around in a circular motion often when 'Mind Taking'.
X's tool of choice is an ungainly silver death console with a telescoping laser emitter that uses obsolete vacuum tube technology.
The thing that he sent is usually never explained, unless it is served as a plot device (Ex: Harvey's Civvy, if Shado received the documents for request for discovery).
Upon meeting Harvey, she professes an immediate interest in his work, dressing up as "Birdgirl" and attempting to secure a position as his sidekick.
She is prone to making monologues about her secret identity when she undergoes an internal crisis, often failing to realize that others are within earshot.
Near the end of the series, after Phil is seemingly killed by a bus, she takes control of the law firm.
He is the subject of several recurring themes such as his mispronunciation of Harvey's last name (such as Mr. Bumnuts) and coughing up objects relevant to the trials he presides over.
In one of the DVD extras, the creators explain that the first time they used the Bear (pointing up at Apache Chief in a photo), he stole the shot and was summarily brought back in the next episode before becoming a permanent, if irrelevant, cast member.
Apache Chief (voiced by Maurice LaMarche) is a small-time superhero and former member of the Super Friends, whose power is enlarging himself to immense size.
Apache Chief once hired Harvey to represent him in a case where he spilled hot coffee on himself and burned his genitals, losing the ability to enlarge.
Black Vulcan (voiced by Phil LaMarr) is a small-time superhero who was once a member of the Super Friends.
Zardo (voiced by John Michael Higgins) is a former enemy of Birdman, having relented his criminal ways apparently to be a home-maker and best friend of X the Eliminator.
He has a mace in place of a left hand, is never seen without his bullet-shaped helmet (through which only his eyes can be seen), and speaks with a German accent.
In the end, she marries Birdman, Phil, Peanut, the two Galaxy Trio Members and the Bear.
Voiced by Neil Ross, he speaks with a slight British accent, wears a bird mask on his head, and has a hangout that is based on the Batcave.
Deadly Duplicator (voiced by Lewis Black) is a villain from Birdman's superhero days who continues to be his enemy.
First seen (in this series) in the background during Murro the Marauder's civil suit against Harvey, Professor Elliott Taggart later became a recurring character who's determined to destroy Birdman.
Alexander the Bartender is the man behind the counter at The Birdcage, a bar Harvey frequents with his friends, and the former Number One, the leader of F.E.A.R., an organization that was determined to destroy Birdman in his superhero days.
He is a short bald man, wearing a red fez, a pink vest, and white pants.