"In the name of Robert of the House Baratheon, the First of His Name, King of the Andals and the Rhoynar and the First Men, Lord of the Seven Kingdoms and Protector of the Realm, I, Eddard, of the House Stark, Lord of Winterfell and Warden of the North, sentence you to die." —Eddard Stark, giving us two examples, from Game of Thrones
The offspring of both Large Ham and Insistent Terminology, this is when a character has some sort of title appended (loudly) to their name. This is typically done by the character in question whenever they introduce themselves (assuming they introduce themselves enough times to count as this trope), however the effect can also be achieved by consistent Boss Subtitles or some sort of lackey giving it for them. Memetic Mutation can lead to fans creating one by always using their name with the title even if the title isn't normally appended to their name in-universe.
The Magnificent might do this, depending on how they feel about their title. If other characters append the title then it's also an example of Phrase Catcher. If they do it themselves then it's (naturally) their Catchphrase.
Remember that simply having a title and using it once or twice doesn't count; the character or someone else must keep using it as part of their name.
See also They Call Me Mister Tibbs, Try to Fit THAT on a Business Card!, I Am the Noun.
Compare Verbal Business Card.
Septimus Heap: The new head of the Message Rat Office is quite verbal at being called "Sir".
In The X-Wing Series, when Wraith Squadron's pilots object to their new recruit Elassar Targon not being Crazy Awesome enough to fit in, he responds by jumping on a table and yelling "Elessar Targon, Master of the Universe, reporting for duty!"
Unseen Academicals has Bengo Macarona, the visiting professor and star football player of Unseen University. He is very highly educated and won't let anyone omit his full academic honors. Even when making up a football chant. This creates an Overly-Long Gag.
Live Action TV
When Conan O'Brien guest-hosted Saturday Night Live he starred in the sketch "Moleculo, the Molecular Man" as a Clark Kent/Superman expy. The others figured out pretty quickly that Brett Baker is really Moleculo, since whenever Moleculo's name comes up he's compelled to say "The Molecular Man!" afterwards. He moves to Mexico where the same thing happens because he still has to yell "El hombre de los moleculos!"
Craig Owens from Doctor Who has an infant son who calls himself "Stormageddon, Dark Lord of All." According to the Doctor, who speaks baby.
Harriet Jones: "You know nothing of any human, and that will be your downfall."
One episode of How I Met Your Mother had Barney setting out to prove that Ted's career makes him sexy by introducing him to various random women as "Ted Mosby, Architect". When Ted will have no part of this, Barney proceeds to spend the evening telling various women that he is Ted Mosby, Architect.
From the US version of The Office we have "Bob Vance, Vance Refrigeration" (who even has the second part used at his wedding).
Star Trek: The Next Generation had (when she was feeling particularly hammy or high and mighty); Lwaxana Troi, daughter of the Fifth House, Holder of the Sacred Chalice of Riix, Heir to the Holy Rings of Betazed!
Calvin appears to have a penchant for this trope, as he has also dubbed himself Calvin The Bold, Calvin the (Super) Genius, Spaceman Spiff, galactic explorer!!, Stupendous Man! Champion of Liberty!! Foe of Tyranny!!!, and so on and so on.
Nermal, the world's cutest kitten! Note that this title is not actually technically accurate; he's really an adult cat that happens to look really young and the sense to go with what works.
TV Tropes Wiki
BRIAN BLESSED. Back in the days when the wiki still had formatting tools for increasing font size, the unspoken rule was that Mr. Blessed's name always be at least one size larger than the surrounding text.
All instances of Ciaphas Cain are to be followed with HERO OF THE IMPERIUM, as seen above.