The talented actors totally transform for their roles. How many do you recognize?

Greatest Character Actors of All Time

"[link=/title/tt5875444]Slow Horses[/link]" and "[link=/title/tt22091076]High Potential[/link]" return with new seasons this month. Check out our [link=/list/ls4103534970/]September calendar[/link] for more!

September 2025 TV and Streaming Premiere Dates

&quot;<a class="ipc-md-link" href="/title/tt5875444?ref_=ttch_eds_right-5_lk">Slow Horses</a>&quot; and &quot;<a class="ipc-md-link" href="/title/tt22091076?ref_=ttch_eds_right-5_lk">High Potential</a>&quot; return with new seasons this month. Check out our <a class="ipc-md-link" href="/list/ls4103534970/?ref_=ttch_eds_right-5_lk">September calendar</a> for more!

Check out our gallery of the 33 first-time performer nominees this year, as the characters they so brilliantly played and in real life.

2025 Emmys First-Time Acting Nominees

Brian Bloom, Eric Loomis, Colleen O'Shaughnessey, and Wally Wingert in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Robin Atkin Downes, Phil LaMarr, and James Mathis III in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Jennifer Hale, Eric Loomis, James Mathis III, Colleen O'Shaughnessey, Fred Tatasciore, and Rick D. Wasserman in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Vanessa Marshall, and Rick D. Wasserman in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom and Eric Loomis in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Chris Cox, Tom Kane, and Wally Wingert in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Chris Cox, Jennifer Hale, James Mathis III, and Roger Craig Smith in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Chris Cox, Jennifer Hale, Peter Jessop, Eric Loomis, James Mathis III, Mary Elizabeth McGlynn, Colleen O'Shaughnessey, Wally Wingert, and Rick D. Wasserman in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Eric Loomis, James Mathis III, Colleen O'Shaughnessey, and Rick D. Wasserman in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Chris Cox, Jennifer Hale, Peter Jessop, Eric Loomis, James Mathis III, Colleen O'Shaughnessey, Fred Tatasciore, Wally Wingert, and Rick D. Wasserman in The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom, Chris Cox, Eric Loomis, James Mathis III, Colleen O'Shaughnessey, Fred Tatasciore, Wally Wingert, and Rick D. Wasserman in The Avengers: Earth's Mightiest Heroes (2010)

Drake Bell and Brian Bloom in The Avengers: Earth's Mightiest Heroes (2010)

After 74 villains break out of prison, Marvel's most powerful superheroes team up to capture all of them, and also to defend the Earth from widespread threats.

The Avengers: Earth's Mightiest Heroes (2010)

Brian Bloom: Captain America • Steve Rogers • Pitt'o Nili • ...

The Avengers: Earth's Mightiest Heroes

Brian Bloom credited as playing...

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