Client Start Year End Year
Liberty Mutual Insurance 2017 Current
Harpoon Brewery 2022 2022

An out-of-the-box in-house agency.

Copper Giants, the in-house agency for Liberty Mutual Insurance, is a one-of-a-kind, in-house agency that can also work on outside clients.

With over 100 years of collective agency experience, we offer full-service capabilities, the in-depth knowledge of working inside a brand, and the brand-building know-how that comes from working on clients that range from retail and beverage to packaged goods and public health.

Are you ready to build something?

Let’s do it together.

  • Warren Marenco Chase

    Warren Marenco Chase

    VP, Managing Director

    Warren Marenco Chase, VP, Managing Director, Copper Giants. Warren is a marketing and advertising veteran who brings vast in-house and external agency experience and expertise to the Copper Giants team. Most recently at Media.Monks, Warren also built Verizon’s in-house agency and spent over 20 years at BBDO. In his career, he’s worked with clients such as Google, Pepsi, Nike, Visa, and more. An industry thought leader, he’s spoken at Cannes, ANA, and IHAF. He lives in San Francisco and New York with his husband, Rick, and their dachshund.
  • Bill  Girouard

    Bill Girouard

    Executive Creative Director

    Bill joined Copper Giants in 2020 as our ECD. Previously, he was an SVP/CD at Arnold Worldwide where he worked on numerous clients for more than 22 years. His client list included CDC, Progressive, Woodford Bourbon, and others dating back to when he started on Bank of America and McDonald’s. His work has been recognized at Cannes, Clio, CA, D&AD, Effie, and more. He lives in southern Massachusetts with his wife and their four sons.
  • Julie  Heger

    Julie Heger

    Director, Integrated Services Project Management & Production

    Julie joined Liberty Mutual’s in-house Creative Group in 2015, before we had the name Copper Giants! Julie leads and oversees Project Management, Production, and Creative Strategy teams. She has 15+ years’ experience managing profitable and complex campaigns in the advertising industry. Prior to Copper Giants, she worked at Hill Holliday on Dunkin’, Cadillac, and Liberty Mutual. She spent most of her career in NYC in creative management and postproduction. She also specializes in creating a collaborative team environment in which staff can design creative solutions to challenging client needs. Julie lives on the South Shore in Massachusetts with her daughter and husband.
  • Amy Appleton

    Amy Appleton

    Associate Director, Production

    Amy is the Executive Producer and Head of Production for Copper Giants, overseeing a team of multidisciplinary producers and the edit/animation department. Before joining Liberty, she helmed a high-end content studio with offices in Boston and LA. In her 20 years in broadcast and digital advertising production, Amy has worked with top agencies (BBDO, GS&P, Sapient Shanghai, Arnold, Hill Holliday) and brands (PepsiCo, LEGO, Cadillac, Bose, Reebok) around the globe. She lives north of Boston with her husband, two kids, and a mischievous puppy.
  • Jojo  Zhang

    Jojo Zhang

    Creative Strategist

    Jojo is a New York–based Creative Strategist. She joined Copper Giants in July 2022, bringing with her 20 years of experience working globally across multiple industries and brands such as Volkswagen, Beats by Dr. Dre, Air France, Canon, and Johnson & Johnson. Jojo comes from a creative background and loves a good brief. Her work has won awards at Cannes Lions, OneShow, Clio, and Effie. She is a dive instructor and a proud dog mom in her spare time.