What's the biggest red flag in a startup founder?

Their nationality.

If they are indian, most likely they are looking to hire a full time slave.

Biggest Red Flag : No Accountability + Blaming others If a founder
Blame the teams, market, investors, or luck for every problem
Never admit mistakes Change stories or hides truth
This is dangerous because startups always face problems A founder who can't take responsibility will never fix issues only avoid them