As part of the agreement with production company Pukeko, American Greetings Properties will represent the Wotwots brand worldwide.
The firm is set to create a licensing programme around the brand focusing on apparel, publishing, back-to-school, home decor and textiles.
Carla Silva, vice president of global licensing at American Greetings Properties, commented: "We are very happy to be partnering with Pukeko Pictures to represent the Wotwots on a global scale. The series’ first season has already proven to be a strong performer on The Hub and has quickly become preschoolers’ favorite alien adventure.
"We look forward to building an exciting licensing program for children that brings to life these lovable characters and helps further encourage the brand’s core values of kindness and cooperation."
Co-founder of Weta Workshop, creators of the WotWots, Sir Richard Taylor, added: “This is a very exciting time for the WotWots as we partner with American Greetings Properties. This international licensing and merchandising deal will ensure the continued growth of the brand and its success in reaching and being accessible to pre-schoolers.
"American Greetings Properties is a leader in the pre-school market so we are looking forward to working with them and building the best possible global licensing program for the WotWots."