That being said, the following are characters that had a reasonable overlap among respondents, but still represent a marginal overall interest among this blog's vocal readership. Every single character offered as a selection received some votes, and these did better than the worst, but not as good as the best. That equates to an 18% positive response, or exactly one more vote each than the five allotted to the 15%-garnered from the last round.
Alex Dunster
A scientist from Detective Comics #228 who was clearly smarter than J'onn, as he managed to get Professor Erdel's teleportation device to work for his wicked purposes. A shame he never appeared again.
Bloodworms of Mars
These guys rated two Wiki-type entries, one detailed at Wikia, the other brief with terrible picture at Angelfire? Oooookay.
Cosmic Creature
In Detective Comics #321, a shapeshifting beast burst out of a space capsule buried underneath Manhunter & Zook's secret mountain hideout. Random.
Diabolu
The wizard who created and named the infamous Idol-Head, though Diabolu himself only appeared in House of Mystery #158. Aside from synopsizing that issue, he's got a VM listing already, so not much left to do.
The Diabolu Idol-Head
Even though it plagued Manhunter for a couple of years, I can't see giving the Idol-Head of Diabolu its own VM listing. It isn't as though it had an intelligence of its own.
Doctor Light
I never felt comfortable with this guy as a Martian Manhunter foe, since they only seemed to only be tied together because Gardner Fox couldn't find a decent Jack Miller Manhunter from Mars foe for his Justice League of America scripts. Mark Waid played with the loose relation in a retcon story, but what really rates Arthur Light is his involvement in J'Onn's murder, along with Effigy and Libra. Dr. Light is really very dead now, so nothing more seems likely to come of it.
Doomsday
Probably still doesn't sit well that I added this Superman villain to the Vile Menagerie, but if J'Onn must constantly be a jobber for the Man of Steel, he's earned that partial ownership.
Duffy, Serial Cop Killer
Okay, you guys don't seriously care about this random nutjob from Showcase '96 #9, do you? He would make for an easy VM entry.
Effigy
He helped Dr. Light keep Martian Manhunter captive before Libra speared him, making him an accessory in the murder. Regardless of his being perfect to battle J'Onn because of his fire-based powers, he's dead and a fairly committed Green Lantern Kyle Rayner foe.
Fernus
Another shot at creating an evil Martian Manhunter, but mostly just another sadistic villain with little real personality, and presumably dead now.
The Human Squirrel
A second story man who went straight, the Human Squirrel was later caught in a scheme to trap him into returning to a life of crime. This was by means of a second grown man dressing in a giant squirrel suit to make the first look guilty. Does that mean I'll need entries for both Human Squirrel I and Human Squirrel II?
The Hyperclan
I don't quite understand why these guys weren't bigger. Sure, they were '90s goofy, but they're almost nostalgic in representing the Chromium Age. In theory, evil Martians could have gotten loose and formed a legion of Hyperclans, but instead they got owned by Batman one time and dismissed. Instead of returning in distinct costumes with various strengths in power, their reappearance was as a bunch of homogenic White Martians (with only about two still identified as individuals.) I actually quite like these guys, and they should have turned up in the Martian Manhunter solo series, at least. I've been sitting on partially written individual listings, but between the overlap of information and mild interest from you folks, I expect they'll stay in their queue.
Invaders From the Space Warp
Alien crooks who each looked like a red-skinned Ric Ocasek, and were indirectly responsible for bringing Zook to our dimension in 'Tec #311
Lobo
There's not a lot of ambiguity with Lobo. You're either in the minority that like him, or you absolutely despise him. I assume this is a combination of overexposure in the '90s and his being directly opposed to the aesthetic of DC Comics. Personally, I love him in small doses, and I think he works better when paired off with someone like Martian Manhunter than Superman. J'Onn is more geared for satirical humor, and he's a far better straight man, plus J'Onn allows leeway for the (im)mature themes Lobo requites access to. Superman always ran with a silly cartoonish version of Lobo, but imagine a Manhunter story playing up the carnage, with J'Onn hearing the mental screams of the Main Man's victims and placed in a situation where his powers alone won't bring a resolution.
The Magician-Thief Who Had Super Powers
I could have sworn I made a VM entry for him already. This was the first super-powered villain to appear in a Manhunter story, as well as the first Martian besides J'onn J'onzz himself. I even used him in my two-part anniversary fan fiction, the "1984 Manhunter from Mars Annual #1" parts one and two. How'd I miss that?
Mr. Moth
A silly character whose sole appearance has been covered and who already has a VM entry. We need never speak of him again.
Monty Moran: The Getaway King / Getaway Mastermind
Moran has a rare double distinction: A Manhunter from Mars villain who appeared more than once and showed up in an anti-Justice League of America group. I suspect this was because he was the closest approximation to a super-villain to appear in recent memory contemporaneous with the JLofA story, and not because Moran was especially appealing. A shame.
Porto
“The Man of 1,000 Disguises” from Detective Comics #315 who was largely defeated by Zook. So, he's a Zook-caliber threat. A'yup. On the bright side, this ginger stage act could meet Mysterio and the Chameleon halfway, which puts him in a decent power range.
S'vor
A not-terrible Jovian criminal in execution, but his porcine appearance and terrible fashion sense ruin him for modern use. Unseen since 1959.
Saturninan Criminal
Powerwise, probably the best non-Martian match of the Silver Age. This red-skinned, bushy browed criminal had superhuman strength, acute vision, shapeshifting ability, and some ill-defined energy/telepathic projection. Definitely worth revisiting.
Strega
A witch who resurrected the mafia's dead as her foot soldiers in a gang war. Appeared in one comic that I'm aware of to face the Martian Manhunter and the Spectre, an impressive duo. As far as I know, she's unrelated to the Shadowpact foe, though they're both red-heads.
Vulkor, the Capsule Master
Another evil Martian, this time an inventor, who fought J'Onn and Green Arrow in their first team-up. Vulkor has personality, and was one of the few decent Silver Age entries into the Vile Menagerie.
Weapons Master
You were expecting the Silver Age JLofA's Xotar? Nope, this is the '90s version, a mercenary in battle armor who could teleport an arsenal into his hands, or use that ability to make a hasty escape. Weapons Master was also more of a J.L.A. foe, but was specifically aligned against Bloodwynd (and by extension, J'Onn J'Onzz.)
