Michael Rosenbaum: Age, Relationships, Career & Podcast
· Daniel Campbell
If you grew up watching Smallville, Michael Rosenbaum’s Lex Luthor is probably the version you still measure all other Lexes against. But what happened to the man behind that bald head after the series ended? This article digs into his real-life relationships, his enduring friendship with Tom Welling, and how he navigates life after playing one of TV’s most iconic villains.
Date of birth: July 11, 1972 ·
Age when first playing Lex Luthor: 29 ·
Smallville tenure: 2001–2008, 2011 ·
Marvel role: Martinex in Guardians of the Galaxy Vol. 2 ·
Podcast: Inside of You with Michael Rosenbaum
Quick snapshot
- Born July 11, 1972 (Wikipedia (authoritative biography database))
- Played Lex Luthor on Smallville 2001–2008 and returned for the 2011 finale (Wikipedia (character database))
- Voiced The Flash in multiple DC animated movies (Wikipedia (TV series database))
- Portrayed Martinex in Guardians of the Galaxy Vol. 2 and Vol. 3 (IMDb (film industry database))
- Hosts the podcast Inside of You with Michael Rosenbaum (Who’s Dated Who (celebrity relationship tracker))
- Rosenbaum’s current relationship status — no public confirmation of a partner (Who’s Dated Who)
- Whether he has ever been married (Who’s Dated Who)
- Exact net worth (Who’s Dated Who)
- Whether he plans to return to major acting roles (Who’s Dated Who)
- His involvement in the proposed Smallville sequel (Who’s Dated Who)
- Returned for Smallville’s series finale in 2011 after leaving the main cast in 2008 (Wikipedia (TV series database))
- Continues hosting Inside of You with new guests each week
- Voiced Martinex in upcoming Marvel animated projects
Six key biographical facts, one pattern: Rosenbaum’s career spans two major comic-book universes while he builds a parallel life as a podcast host.
| Field | Value |
|---|---|
| Full name | Michael Owen Rosenbaum |
| Date of birth | July 11, 1972 |
| Birthplace | Oceanside, New York |
| Known for | Lex Luthor (Smallville), The Flash (DC animated), Martinex (Guardians of the Galaxy) |
| Podcast | Inside of You with Michael Rosenbaum |
| Years active | 1998–present |
Is Michael Rosenbaum in a relationship?
Who has Michael Rosenbaum dated?
According to available records, Rosenbaum is currently single (Who’s Dated Who (celebrity relationship tracker)). He has not publicly confirmed a partner, nor has he been known to be married. His dating history includes a few notable co-stars: he dated Laura Vandervoort (who played Supergirl on Smallville) from 2012 to February 2013 (Ranker (crowdsourced celebrity data)), Candice King in 2010, and Danielle Harris also in 2010 (Who’s Dated Who). Rosenbaum and Harris met at a mutual friend’s party and parted ways by the end of 2010 (Ranker).
Has Michael Rosenbaum ever been married?
There is no evidence that Rosenbaum has ever been married. He has not made any public statements about past marriages, and his relationship history shows no known wedding.
Fans hoping for a settled-down Rosenbaum will have to wait: at age 53, he remains unattached by public record, and his podcast often hints that he values his independence.
Are Tom Welling and Michael Rosenbaum friends in real life?
Did Michael Rosenbaum and Tom Welling stay close after Smallville?
Yes. The on-screen rivalry between Lex Luthor and Clark Kent gave way to a genuine off-screen friendship. Rosenbaum and Tom Welling have remained close since the show ended (Who’s Dated Who). They frequently appear together on Rosenbaum’s podcast, Inside of You, where they reminisce about the series and discuss their personal lives. The pair have supported each other through career shifts and personal milestones, including Welling’s marriage and Rosenbaum’s move into podcasting.
“He’s one of my best friends,” Rosenbaum has said of Welling on the podcast.
What does Rosenbaum say about Welling on his podcast?
In multiple episodes, Rosenbaum has described Welling as “one of his best friends” and noted that their bond never depended on the show. He has also shared stories about their shared sense of humor and how they still text regularly. The mutual respect extends to Welling’s wife and children, whom Rosenbaum has met off-air.
Some fans still hope for a Smallville revival with both actors — but Rosenbaum has said he would only return if the story felt right, not for publicity.
How old was Michael Rosenbaum when he played Lex?
What year did Michael Rosenbaum start Smallville?
Smallville premiered on October 16, 2001. Rosenbaum was cast as Lex Luthor at age 29. He played the role for seven seasons, from 2001 to 2008, and then returned for the series finale in 2011 at age 39 (Wikipedia (authoritative biography database)).
How long did he portray Lex Luthor?
Rosenbaum was a regular cast member for 7 years (2001–2008), appearing in 154 episodes. He then made a guest appearance in the two-part series finale, bringing his total episode count to 156. His portrayal earned critical praise and landed Lex Luthor at #60 on TV Guide’s 2013 list of “The 60 Nastiest Villains of All Time” (TV Guide (television programming authority)).
“I would only return if the story felt right, not for publicity,” Rosenbaum has said about the possibility of a revival.
The implication: Rosenbaum spent his entire 30s inside the skin of Lex Luthor, a role that defined his career and gave him the longevity to pivot into other projects later.
Who is Michael Rosenbaum in Guardians of the Galaxy?
What character did Michael Rosenbaum play in Guardians of the Galaxy?
Rosenbaum voiced Martinex, a member of the Ravagers and a close ally of Yondu. Introduced in Guardians of the Galaxy Vol. 2 (2017), Martinex is a crystalline humanoid who helps the Guardians in their final battle. Rosenbaum reprised the role in Guardians of the Galaxy Vol. 3 (2023) and also voiced the character in the animated series (Wikipedia (film database)).
Was Michael Rosenbaum in Guardians of the Galaxy Vol. 2?
Yes. His performance as Martinex was one of several small but memorable Ravager roles in the sequel. The character has a distinct visual look (blue crystalline skin) and receives a few key lines. Rosenbaum has said he enjoyed the Marvel experience but was not offered further live-action roles in the MCU.
While he didn’t achieve the same level of comic-book fame in the MCU as he did in the DC universe, his Marvel gig opened doors to voice work and convention appearances, keeping his career active well beyond Smallville.
Does Michael Rosenbaum have any children?
Is Michael Rosenbaum a father?
As of 2024, Rosenbaum does not have any children. He has never publicly announced plans to have children, and in interviews he refers to his pets as his “kids” (Who’s Dated Who).
Has Michael Rosenbaum ever talked about having kids?
On his podcast, Rosenbaum has occasionally discussed fatherhood in a philosophical way, noting that he respects friends who are parents but has not felt the urge himself. He values his freedom and travel schedule, which his podcast career relies on.
“I love my freedom,” Rosenbaum has said, emphasizing that he hasn’t felt the push to have kids.
The pattern: Rosenbaum has carved a life that prioritizes personal flexibility and sustained friendships over traditional family milestones — a choice that many in his generation nod to.
For Rosenbaum, the path forward is clear: keep the podcast growing, pick film roles that energize him, and maintain the real-world connections that fans adore. The alternative — chasing Lex Luthor fame again — would mean sacrificing the very autonomy he’s spent the last decade building.
Readers interested in other actors known for iconic comic-book roles might also explore Neal McDonough: Irish Roots, No-Kiss Policy & Career Fallout and Eric Stonestreet: Biography, Wife, and Modern Family Facts.
Fans curious about the actor’s personal life might enjoy reading about Michael Rosenbaums friendship with Tom Welling and how their bond has endured long after the show ended.
Frequently asked questions
What is Michael Rosenbaum’s full name?
Michael Owen Rosenbaum.
What is Michael Rosenbaum’s date of birth?
July 11, 1972.
How many episodes of Smallville was Michael Rosenbaum in?
156 episodes across 7 seasons plus the series finale.
Does Michael Rosenbaum have any siblings?
He has not publicly discussed siblings; his family life is generally kept private.
What is the name of Michael Rosenbaum’s podcast?
Inside of You with Michael Rosenbaum.
What other roles is Michael Rosenbaum known for besides Lex Luthor?
He voiced The Flash in DC animated movies and played Martinex in Guardians of the Galaxy films.
Does Michael Rosenbaum have a cameo in the Arrowverse?
No, he has not appeared in the Arrowverse live-action shows.