If you're looking for something to replace Omni-Zero, Wonder-AI is a good alternative. It has a three-step interface to transform you into different characters and styles, including anime characters and Disney princesses. The service requires a six-hour training period after you upload a photo, but then you can generate and edit portraits with ease. It's good for making eye-catching YouTube thumbnails and just exploring your creative side.
Another good option is PortraitArt, which converts photos you upload into a range of art styles like oil painting, watercolor and caricature. The service works with a wide range of photos and sends results by email. It's good for creating personalized art for home decor, gifts or mementos.
If you want something more flexible, Imajinn has a range of features like personalized children's books, printed portraits and a product photo visualizer. It uses AI to transform images you upload into a wide range of artistic creations, so it can be good for business and personal use. The service offers fast and relatively inexpensive visualization options, including for more advanced graphic design tasks.
Also worth a look is Photosonic, an AI-powered art generator that can create royalty-free images from text prompts. It can generate a range of art styles, from abstract to photorealistic, and it's easy to create custom images for social media, blog posts and other uses. The service offers a free trial and paid subscription options for personal and business use.