Hell’s Creative is a Growth Marketing Agency located in New York City. Powered by data, automation, math, and sales methodology we drive outstanding results for our clients. We are the only Growth Marketing Agency truHell’s Creative is a Growth Marketing Agency located in New York City. Powered by data, automation, math, and sales methodology we drive outstanding results for our clients. We are the only Growth Marketing Agency truly designed for Series A start-ups and beyond. Our All-You-Can-Spend business model, Data-Driven process, and Concierge-Style-Management have led dozens of our clients to double digit growth.ly designed for Series A start-ups and beyond. Our All-You-Can-Spend business model, Data-Driven process, and Concierge-Style-Management have led dozens of our clients to double digit growth.