Based on the search results and current trends in comedy, here are nine active comedians known for their improv comedy skills:

1. Armando Anto: Scheduled to perform at the Irvine Improv in January 2025[3].

2. James Adomian: Set to appear at the Irvine Improv in January 2025, known for his character work and improvisation[3].

3. Hannah Berner: Performing “Working Out New Material” at the Irvine Improv, suggesting an improvisational approach to her comedy[3].

4. Matty Fontana: Featured in “An Evening at the Improv” lineup, indicating skills in improvisational comedy[3].

5. Billie Lee: Also part of the “An Evening at the Improv” showcase, likely incorporating improv elements[3].

6. BT Kingsley: Another performer in the “An Evening at the Improv” lineup, suggesting improv abilities[3].

7. Zack Chapaloni: Featured in the improv showcase at Irvine Improv[3].

8. Hormoz Rashidi: Part of the improv lineup at Irvine Improv[3].

9. Nicole Aimee Schreiber: Mentioned in the “An Evening at the Improv” lineup, indicating involvement in improv comedy[3].

These comedians represent a mix of established names and emerging talent in the world of improv comedy, each bringing their unique style to spontaneous performances.

Citations:
[1] https://www.summitcomedy.com/top-10-college-comedians-to-hire-in-2025/
[2] https://www.youtube.com/watch?v=b6HiWxha1gU
[3] https://improv.com/irvine/calendar/
[4] https://nypost.com/ticket-sales/175-biggest-comedy-tours-2025-get-tickets-dates-more/
[5] https://www.reddit.com/r/improv/comments/1h2p0m9/what_are_some_upcoming_improvcomedy_festivals_in/
[6] https://deadline.com/2024/12/comedians-to-watch-2025-1236202510/
[7] https://improv.com/ontario/calendar/
[8] https://improv.com/irvine/calendar/mar-2025/