It’s also ungrammatical and also used in Spanish, “¿Como está el Frodo?” (How’s the Frodo doing) for example, technically the “el” is unnecessary and ungrammatical but it’s used colloquially nonetheless.
In English we put an article in front of some names like The Jesus (from The Big Lebowski) and The Donald. Maybe that’s just a thing for adjudicated sex offenders.
It will apparently also be very good at human mass extinction and general world domination, while continuing to wow us by solving all of our the universe’s secrets and creating better music than Beethoven and Mozart combined.
Colloquial, indeed, but also for nicknames in dubious settings, like el Chapo (this one or this one), or el Ganzúas (the Lockpick, then you know you are talking about a thief). It has an underclass ring about it IMO.
In German it is similar, perhaps a little less underclass, but I would say that it also could be a regionalism, specifically Bavarian or Austrian. In rural areas they could say der Müller Sepp instead of Herr Sepp Müller.
And of course there’s The Fonz
As a German, it is my duty and my pleasure to also mention the Hoff. 
Here in the Sauerland, we have another peculiar way to express names: “der Müller Sepp” here would be “Müllers Jupp”.
ETA: an explanation for non-Germanophiles: “Sepp” is the Southern German nickname for “Josef”, and “Jupp” the Northern variant.
No doubt about it.
Superheroes are consistently inconsistent on the use of “the.”
Superman is always Superman but Batman is sometimes The Batman.
Bruce Banner is sometimes Hulk and sometimes The Hulk.
Wasp is sometimes The Wasp.
The Flash usually has the “The”.
Spider-Man and Thor are never “The.” Neither are Green Lantern or Wonder Woman.
Groups I think always have the “The.” The Fantastic Four. The Avengers. The Justice League. The X-Men.
Other than groups, I don’t see any pattern to explain this.
True in comic book title as well. The Amazing Spider-Man. The Incredible Hulk. Daredevil, The Man Without Fear.
AGI means Adjusted Gross Income. 
That’s how I normally think of it, having grown up and lived for many years in L.A. The Arroyo Seco (literally meaning “dry wash”) lives up to its name between Pasadena and L.A., but in the mountains beyond Pasadena it’s evidently perennial. I was surprised a few years ago when I saw an L.A. Times article about how trout were being returned there; for some reason they’d been removed previously. I think it had been due to a fire.
It’s really not all that surprising though. Before being channelized, most of SoCal’s rivers were perennial. There’s a Little Rascals short where they go fishing in Ballona Creek. And the L.A. River powered the grindstones at the Capitol Milling Company on North Spring until the early 20th century.
and SF is The City
So is Manhattan and lots of other places by the suburbanites.
(my bolding)
I believe I first learned the bolded from the film Europa Europa.
…
It’s interesting to read of the use of the definite article with personal names in Germany. Something akin to this is part of some subdialects in the New Orleans area. This usage gets down to the level of neighborhood/family subdialects in the New Orleans area where there had been German-speaking influence** in living memory after World War II. This includes the speech community of my mother, her (now deceased) siblings, and many of her lifelong age-peer friends and some family friends (also age-peers of my mother).
Anyway, the specifics are hard to pin down … but generally, the usage [DEF ARTICLE + GIVEN NAME] is either a negative-judgment marker or a diminutive/“cutesy” marking with a few exceptions. The definite article is never used with a surname unless a person is called familiarly by that surname (which is very rare in all local speech communities).
Also, the definite article is not used in direct address [e.g. *The EinsteinsHund, would you like a slice of pie? violates the “rules” of these subdialects].
Some sample usages – by no means a comprehensive account:
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Grammatical eye-rolling: “The Donna can’t use Manda sausage in her red beans - HAS TO BE Smoky Hollow.”
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Getting busted: (Mandy is Claire’s daughter) “I was telling Beryl about Mandy’s goofball husband, and the Claire walks up … perfect timing, like usual.”
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Aggravation / inconvenience: “She said her car won’t start … uh-huh, again … so, yeah, we gotta swing by and pick up the Cheryl on the way.”
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Neutral/flexible marker: “When Joe asks her to do something, she might get to it one day. If the Brian asks her – honey, she’ll move heaven and earth for him!”
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Cutesy: (Philip is a 6-month-old baby boy, nicknamed “Lip” or “Lippy-Loo”) "Look at the little fingers … oooh, the Lippy-Loo!"
…
** further reading about an earlier wave of German migration to Louisiana to rural areas immediately west of New Orleans, centered on a town today still known as Des Allemands.
Some places have historically used a preceding “The” such as The Argentine, The Ukraine and so on. AIUI the difference is The means that general area, whereas no-The means that country.
That’s not the same thing though. The [Big] Lebowski, The Donald, etc., are essentially nicknames assumed by or given to specific persons. You wouldn’t refer to just any random people with those names as The Donald or The Lebowski.
ETA: In case anyone is wondering, “the irrepressible Curley” is from a late night comedy sketch that imagined Three Stooges films on Masterpiece Theater presented by Alistair Cooke. I think it was on SNL.
Today I learned that the world’s largest sports stadium by capacity is a cricket stadium in Ahmedabad, India. It seats 132,000. The second-largest is a multi-use stadium located in Pyongyang, North Korea, which seats 114,000. And the third is an American football stadium in Ann Arbor, Michigan, USA. It seats 107,600.
Watching videos about the B-58 Hustler yesterday I found out that in 1961 the plane set 6 world speed records in one day. The pilot was Major Henry J. Deutschendorf Sr.
His son, Henry John Deutschendorf, Jr., was better known as John Denver.
And some languages don’t even have articles at all. Classical Latin, notably, not only had no articles, but no words for “yes” or “no”.
On arroyos, I don’t use the word much because they’re not a common phenomenon here in the East, but I would also understand it to mean a dry gulch that fills with water only occasionally, when it rains hard or the snow melts.
…I only just realized why Sesame Street’s “Monsterpiece Theater” is hosted by Cookie Monster.
“Alistair Cookie” Monster.