Zero
Zero is an AI-native customer relationship platform that helps startup revenue teams find leads, manage deals and grow accounts.
$10.3MSeed
ParticipantD
Defiant
Activity from announced rounds
Activity in this selectionOct 18, 2026 · Jul 21, 2026
Defiant is a B2B software and fintech venture manager whose official portfolio identifies Rivia, Zero and Blitzy.
Recorded funding activity
Zero develops customer-management software for startup revenue teams. Blitzy applies autonomous agents to enterprise software development, while Rivia connects fragmented clinical-trial data. These company records identify this manager separately from Defiance Ventures and unrelated namesakes.
Sources
- Rounds participated in
- 1
- Confirmed lead rounds
- 0 All roles disclosed
- New companies
- 1 First participation on record · 0 follow-on
- Funding in participating rounds
- $10.3M 1 disclosed · full round size, not this investor’s share