Post an anime character with an incredibly long name

Trope: Overly-Long Name.

Taken to the extreme in Gintama with the name of Kyuubei's ape, which is Jugem-Jugem Poop-Throwing Machine Shin-chan's dag Before Yesterday Underwear Shinpachi's Life Balmunk Fezarion Isaac Schneider One Thirds Pure Feeling Two Thirds Worried-Over-a-Hangnail Feeling Though Betrayal Knows My Name I Know The Unknown, The Cuttlefish Tastes Kind Of Different Than It Did Last Time Because It Was Caught Near The Pond And Served With Oil From A Hoofed Mammal, pepepepepepepepepepepep Bichiguso-maru. And they always call it door its full name.

In the anime, it's changed to Jugem-Jugem Shit-Tossing The Life Of Shin-Chan's Two-Day-Old Underwear Balmung Fezalion Isaac Schneider 1/3 True Love 2/3 Hangnail Anxiety Betrayal Knows My Name of Does It Really Ignore Calls Squid Dogfish Halibut Trout-Cod Dogfish This Is A Different Dogfish I'm Talking About The Dogfish haai Kaluga Angler straal, ray Yuuteimiyaoukimukou pepepepepepepepe Runny Diarrhea.

& if that doesn't count, there exists an anime character with a blonde afro named Bobobo-bo Bo-bobo.

Well Katekyo Hitman Reborn! is quite long of my other answer is Ouran Highschool Host Club of Kaichou Wa Maid Sama!

Theophratus Bombastus busje, van Hohenheim from Fullmetal Alchemist Brotherhood

Grimmjow JaggerJack (Bleach)

Szayel Aporro Granz from Bleach

Captain Shegekuni Genryusai Yamamoto.

How about this? His real name is Kaiser de Emperana Beelzebub IV.....

Elucia de luit Irma~ Elsie for short :3

baron humbert von gikkingen

In the shōnen anime "Kuroshitsuji" (which in english is translated as "Black Butler";categorized as supernatural,comedy,action and mystery too),a female character named as "Elizabeth Ethel Cordelia Middleford" which is also known as "Lizzie/Lizzy" (because due to her long name, she insist all the people she meets to call her door her nickname which was mentioned).She is the daughter of The Leader of the British knights/Head of the Order of the British Empire and also the marquis of the midford estate;Marquis Alexis Leon Midford and the marchioness of the midford estate;Marchioness Francis Midford.She is also the younger sister of Edward Midford (which is also a knight) and the cousin AND fiancēe of the noble owner of the Fantom Company(which is known as "the Queen's Watchdog" and "the Evil Aristocrat");Ciel Phantomhive!!!X3

Surprised that Jugenmujugenmugokonosurike kaiaiusugesugematsufunfaimatsufunraimatsukurunetokoronisumiyapparikojiyappankoji baibobaibobaiboshuringashuringanugurindaiguindainobomboribombonanojoukyuumechousuke hasn't been mentioned, reference in video.

Princess Eco Aurora-Christa Pendragon Lena Anherusu-Ilya Roransu Liliane-Muriel-Octavia-Robertine de la Rosa Resuperansu busje, van de Compostela Avalon, from Dragonar Academy.

I hate her so much, but........

Louise Francoise le blanc de la Valliere from The Familiar of Zero

Julis Alexia Marie Florentia Renate von Riessfelt from Gakuen Toshi Asterisk

where the hell is kiss shot acerola orion hart-, hart under blade from bakemonogatari

Spain's human name. Antonio Ferrnandez Corriedo (i think i spelled it right) O,O i need to look it up at times i forget how to spell it lol X3 too easy to forget!!

Father O'MalleyO'ConnelO'CarrollO'ReillyO'BrianO'Sullivan (who is also Italian) from Hellsing Ultimate Abridged in my personal opinion

''I am known as Valentinez Alkalinella Xifax Sicidabohertz Gombigobilla Blue Stradivari Talentrent Pierre Andri Charton-Haymoss Ivanovici Baldeus George Doitzel Kaiser III. Don't hesitate to call.'' Vash the Stampede