Brian Nichols is the co-founder of Angel Squad, a community where you’ll learn how to angel invest and get a chance to invest as little as $1k into Hustle Fund's top performing early-stage startups

Let me tell you about two founders.

The first one was an extraordinary fundraiser. Exceptional storyteller. High EQ. Formed strong relationships quickly. Showed up to the meeting with a long list of investors who had already verbally committed to the round. When asked about customer acquisition strategy, customer discovery, and retention? He did not have great answers. He had not actually done much work on the business yet. But people loved him. And so they invested.

The second founder was not as obviously impressive. Soft-spoken. A bit socially awkward. Solving a problem in a space that felt kinda boring. But when asked those same questions about customers and retention? It was clear she was hustling hard. Getting on the phone with potential customers. Testing variations of her messaging. Closing deals.

I will give you one guess as to which raised more money. The charmer. And I will give you one guess as to which built a profitable company and saw a decent exit. The awkward one.

This is the charmer problem. And it trips up investors constantly.

Why Charm is Dangerous (For Investors)

Charm is a real skill. It helps founders recruit talent, close customers, and raise money. There is nothing inherently wrong with a charismatic founder. But when charm is the primary tool someone uses to get through investor conversations, it can mask serious problems underneath.

The charmer tends to deflect tough questions with smooth answers that sound good but do not actually address the substance. They reframe weaknesses as strengths without acknowledging real challenges. They create urgency and FOMO to rush your decision.

The antidote is to slow down. If a founder makes you feel like you need to decide right now, that is worth noticing. Good companies will still be good companies next week. Founders who push for instant commitments often do so because their story does not hold up under extended scrutiny.

It is like dating. Someone who is all charm at the bar but has not actually done the work to be interesting once you spend real time with them? That is a red flag, not a green one.

The Red Flags Worth Tracking

Beyond the charmer dynamic, there are specific patterns that experienced investors learn to spot over time.

Not knowing their numbers. Here is a real story from our team at Hustle Fund. During a call with a founder looking for investment, it became painfully clear this person did not understand their own metrics. They did not know monthly traffic, conversion rate, percentage of returning customers, or customer acquisition cost. We did not pass because the numbers were bad. We passed because the founder did not know them. If someone does not have a firm grip on what is happening in their business, that tells you a lot about how they operate.

Getting defensive when challenged. Our team looks for founders with growth mindsets, people who are open to receiving new information and hearing new perspectives. It is a big red flag when a founder gets combative or dismissive when you ask hard questions. There is a difference between holding your ground with data and being unable to accept that you might be wrong about something.

Too many ideas, not enough focus. Elizabeth Yin's business partner Shiyan Koh likes to say that startups die from indigestion, not starvation. Founders chasing five different markets, building three different products, and targeting multiple customer segments are almost always spreading themselves too thin. The best founders are focused on one problem, one customer, one product.

Reluctance to discuss what is not working. Every startup has challenges. Every founder has made mistakes. If someone paints a purely rosy picture with no pivots, no failures, and no lessons learned, they are either hiding things or not learning. Both are problems.

The Green Flags That Actually Matter

If charm is not a reliable signal, what should investors look for instead?

Customer obsession. The best founders can tell you in granular detail why customers buy, why they do not buy, why they churn, and what they have done about each of these. Ask a founder "why do people not buy?" If they can rattle off the top three objections and explain how they are addressing each one, that is someone who has done the work.

Intellectual honesty. Look for founders who can tell you exactly what is working and what is not. They are not afraid to say "we tried this and it failed" or "we have not figured that out yet." That transparency signals someone who will communicate openly after you invest, especially when things go sideways. And things will go sideways.

Resilience evidence. Has this founder been through something genuinely hard? It does not have to be a startup. Immigration, career pivots, personal challenges, rebuilding after a failure. The startup journey is brutal, and the founders who make it are the ones who keep going when everything looks bleak.

Coachability. Not founders who agree with everything you say (that is its own red flag). Founders who listen, consider new information, and adjust their thinking. People with actual growth mindsets, not people who just claim to have them on their LinkedIn profiles.

The Takeaway

Look, not all charming founders are bad operators. And not all awkward founders are great ones. But the best investors we know have learned to separate performance from substance. A great pitch does not equal a great company.

Slow down. Ask hard questions. Dig into the numbers. And if something feels off, trust that instinct. The questions that matter are not about who else is on the term sheet or where the founder went to school. They are about customer discovery calls, retention data, and whether this person deeply understands the problem they are trying to solve.

If you want to build that pattern recognition alongside 2,500+ investors who evaluate founders together every week, Angel Squad is where that skill gets developed. Explore it at Angel Squad.

The best founders do not need charm to win you over. Their business does the talking.