Dr. Donald "Ducky" Mallard
E781300
Dr. Donald "Ducky" Mallard is the eccentric, bow-tie-wearing chief medical examiner and beloved mentor figure on the long-running TV crime drama NCIS.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Dr. Donald "Ducky" Mallard canonical | 2 |
| NCIS Chief Medical Examiner | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9150175 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Dr. Donald "Ducky" Mallard Context triple: [David McCallum, role, Dr. Donald "Ducky" Mallard]
-
A.
Leroy Jethro Gibbs
Leroy Jethro Gibbs is a stoic, highly skilled former Marine sniper and the lead special agent of the NCIS Major Case Response Team in the long-running television series "NCIS."
-
B.
Dr. Sam Beckett
Dr. Sam Beckett is the time-traveling physicist and protagonist of the science fiction television series "Quantum Leap," who "leaps" into other people's lives to correct historical mistakes.
-
C.
Sidney Parker
Sidney Parker is a central romantic lead in Jane Austen’s unfinished novel "Sanditon," portrayed as a charming yet initially enigmatic gentleman whose evolving relationship with the heroine drives much of the story’s drama.
-
D.
Anthony DiNozzo
Anthony DiNozzo is a charismatic, wisecracking former homicide detective who serves as a senior field agent on the hit TV crime drama NCIS.
-
E.
Horatio Caine
Horatio Caine is the iconic, sunglasses-wearing lieutenant of the Miami-Dade Crime Lab known for his calm demeanor, moral conviction, and memorable one-liners in the TV series CSI: Miami.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Dr. Donald "Ducky" Mallard Target entity description: Dr. Donald "Ducky" Mallard is the eccentric, bow-tie-wearing chief medical examiner and beloved mentor figure on the long-running TV crime drama NCIS.
-
A.
Leroy Jethro Gibbs
Leroy Jethro Gibbs is a stoic, highly skilled former Marine sniper and the lead special agent of the NCIS Major Case Response Team in the long-running television series "NCIS."
-
B.
Dr. Sam Beckett
Dr. Sam Beckett is the time-traveling physicist and protagonist of the science fiction television series "Quantum Leap," who "leaps" into other people's lives to correct historical mistakes.
-
C.
Sidney Parker
Sidney Parker is a central romantic lead in Jane Austen’s unfinished novel "Sanditon," portrayed as a charming yet initially enigmatic gentleman whose evolving relationship with the heroine drives much of the story’s drama.
-
D.
Anthony DiNozzo
Anthony DiNozzo is a charismatic, wisecracking former homicide detective who serves as a senior field agent on the hit TV crime drama NCIS.
-
E.
Horatio Caine
Horatio Caine is the iconic, sunglasses-wearing lieutenant of the Miami-Dade Crime Lab known for his calm demeanor, moral conviction, and memorable one-liners in the TV series CSI: Miami.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
NCIS character
ⓘ
fictional character ⓘ medical examiner ⓘ television character ⓘ |
| appearsIn |
JAG
ⓘ
NCIS ⓘ |
| closeColleague |
Abby Sciuto
ⓘ
Jimmy Palmer ⓘ Leroy Jethro Gibbs ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| createdFor |
television series NCIS
ⓘ
linked to:
NCIS
|
| department |
NCIS Medical Examiner’s Office
ⓘ
linked to:
NCIS Major Case Response Team
|
| employer | NCIS ⓘ |
| fictionalUniverse |
NCIS universe
ⓘ
linked to:
NCIS franchise
|
| firstAppearance |
NCIS: Naval Criminal Investigative Service (backdoor pilot on JAG)
ⓘ
linked to:
NCIS
|
| firstAppearanceInSeries |
NCIS Season 1
ⓘ
linked to:
NCIS
|
| fullName | Donald Mallard ⓘ |
| gender | male ⓘ |
| genre | crime drama character ⓘ |
| hasPet | dogs (various, mentioned in series) ⓘ |
| knownFor |
eccentric personality
ⓘ
telling long anecdotes ⓘ wearing bow ties ⓘ |
| languageSpoken | English ⓘ |
| laterPosition | NCIS Historian ⓘ |
| loyalTo |
Leroy Jethro Gibbs
ⓘ
NCIS team ⓘ |
| mentorTo |
Leroy Jethro Gibbs
ⓘ
NCIS Major Case Response Team ⓘ |
| nationality | Scottish ⓘ |
| network | CBS ⓘ |
| nickname | Ducky ⓘ |
| occupation |
chief medical examiner
ⓘ
forensic pathologist ⓘ |
| personalityTrait |
compassionate
ⓘ
erudite ⓘ kind ⓘ |
| portrayedBy | David McCallum ⓘ |
| rank | Chief Medical Examiner ⓘ |
| role | mentor ⓘ |
| serviceBackground | served in the British Army medical corps (backstory) ⓘ |
| specialization | forensic pathology ⓘ |
| supervises | Jimmy Palmer ⓘ |
| title | Doctor ⓘ |
| wardrobe |
bow tie
ⓘ
three-piece suits ⓘ |
| worksFor | Naval Criminal Investigative Service ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Dr. Donald "Ducky" Mallard Description of subject: Dr. Donald "Ducky" Mallard is the eccentric, bow-tie-wearing chief medical examiner and beloved mentor figure on the long-running TV crime drama NCIS.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.