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Firstborn

Firstborn Cast

10 cast members · 10 with popularity data
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Most Popular Firstborn Cast Members

Robert Downey Jr. is currently the most popular Firstborn cast member online with a Attention Score of 9.9. 1 of 10 cast members rank in the top 1,000 actors online today. Updated July 25, 2026.

1
Robert Downey Jr.
Lee
9.9
#244 overall
2
Sarah Jessica Parker
Lisa
4.5
#1,112 overall
3
Corey Haim
Brian Livingston
2.6
#2,488 overall
4
Teri Garr
Wendy
2.2
#3,078 overall
5
Peter Weller
Sam
1.8
#3,819 overall
6
Ned Eisenberg
Learner Driver (uncredited)
0.1
#25,645 overall
7
Christopher Collet
Jake Livingston
0.1
#27,890 overall
8
Chris Gartin
Mr. Rader
0.1
#36,645 overall
9
James Harper
Mr. Rader
0.0
#52,944 overall
10
Larry Atlas
Stranger
0.0
#59,103 overall
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