Crime Solvers Central
Crime Solvers Central
302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP77529) and 3 other sources
Daniel Joseph Guido, age 36, was last seen on July 19, 1994, in Monterey County, California. He was a prominent member and vice president of the Monterey chapter of the Hell's Angels motorcycle club, and his disappearance is classified as suspicious. Guido's involvement with the motorcycle club has led investigators to suspect foul play in his case. Despite being reported missing shortly after his disappearance, no concrete leads have surfaced regarding his whereabouts, and he has not been heard from since.

Guido was described as being 5'9" to 5'10" tall, weighing about 230 pounds, with dark brown hair and brown eyes. He had distinctive tattoos on his chest and upper right arm and had previously fractured his left knee. The Seaside Police Department continues to investigate his case, and it remains open and unsolved.

Given Guido's ties to the Hell's Angels and the lack of information since 1994, investigators strongly suspect foul play, though no suspects have been publicly named. Authorities urge anyone with information about the case to contact the Seaside Police Department.

Last Seen: Jul 19, 1994

Possible Unidentified Matches (10)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

81%Moderate
John Doe — San Jose, California
UP127425 • Found Jun 14, 1997
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Sex ✓Male
Age 100%Est. 38–52 vs 36 when missing
Race 100%White
Location 91%44 mi away, same state
TimingFound 3 years after last seen
Height 100%5'10" vs 5'10"
Weight 29%139 lb vs 230 lb
Hair 100%Brown vs Brown
80%Moderate
John Doe — San Jose, California - unidentified case UP57876
John Doe — San Jose, California
UP57876 • Found Oct 15, 2017
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Sex ✓Male
Age 100%Est. 48–62 vs 36 when missing
Race 100%White
Location 89%51 mi away, same state
TimingFound 23 years after last seen
Height 100%5'11" vs 5'10"
Weight 94%260 lb vs 230 lb
Hair 70%Gray vs Brown
Eyes 100%Brown vs Brown
79%Possible
John Doe — Burlingame, California
UP9898 • Found Oct 5, 1995
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Sex ✓Male
Age 100%Est. 33–46 vs 36 when missing
Race 100%White
Location 83%72 mi away, same state
TimingFound 15 months after last seen
Height 68%5'7" vs 5'10"
Weight 33%142 lb vs 230 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
77%Possible
John Doe — San Francisco, California
UP91361 • Found Feb 5, 2022
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Sex ✓Male
Age 100%Est. 60–70 vs 36 when missing
Race 100%White
Location 78%89 mi away, same state
TimingFound 28 years after last seen
Height 100%5'9" vs 5'10"
Weight 86%191 lb vs 230 lb
Hair 70%Gray vs Brown
Eyes 100%Brown vs Brown
77%Possible
John Doe — San Francisco, California
UP5946 • Found Jul 7, 1996
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Sex ✓Male
Age 85%Est. 30–50 vs 36 when missing
Race 100%White
Location 79%87 mi away, same state
TimingFound 24 months after last seen
Height 100%5'11" vs 5'10"
Weight 94%200 lb vs 230 lb
76%Possible
John Doe — Turlock, California
UP50957 • Found Jul 11, 2001
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Sex ✓Male
Age 100%Est. 30–45 vs 36 when missing
Race 100%White
Location 80%81 mi away, same state
TimingFound 7 years after last seen
Height 68%5'7" vs 5'10"
Weight 77%130–180 lb vs 230 lb
Hair 100%Brown vs Brown
76%Possible
John Doe — Forestville, California
UP93104 • Found Dec 31, 1994
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Sex ✓Male
Age 100%Est. 35–45 vs 36
Race 100%White
Location 67%141 mi away, same state
TimingFound 5 months after last seen
Height 100%5'11"–6'1" vs 5'10"
76%Possible
John Doe — Newman, California - unidentified case UP13001
John Doe — Newman, California
UP13001 • Found Feb 1, 1995
View case
Sex ✓Male
Age 88%Est. 25–35 vs 36
Race 60%Hispanic
Location 85%65 mi away, same state
TimingFound 6 months after last seen
Height 84%6'0" vs 5'10"
Weight 77%180 lb vs 230 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
75%Possible
John Doe — Milpitas, California
UP72156 • Found Jun 14, 2018
View case
Sex ✓Male
Age 100%Est. 50–60 vs 36 when missing
Race 100%White
Location 87%57 mi away, same state
TimingFound 24 years after last seen
Height 100%5'7"–5'11" vs 5'10"
75%Possible
John Doe — Fresno, California
UP15816 • Found Jul 7, 2000
View case
Sex ✓Male
Age 100%Est. 25–40 vs 36 when missing
Race 100%White
Location 72%115 mi away, same state
TimingFound 6 years after last seen
Height 84%6'0" vs 5'10"
Weight 100%238 lb vs 230 lb
Hair 40%Gray vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.