Monthly Subscription ideas for Images - specifically character sets

Hi All. I am creating many courses in Storyline that require the same character in many different poses. I have used some characters directly from SL but am looking for a little more variety. I was hoping to get recommendations for monthly subscriptions for assets - specifically characters bundles or sets. I am finding a ton of subscriptions for photo images, but not having much luck in finding png characters. I really like the idea of monthly subscriptions where you have unlimited downloads, not pay-per-image memberships. Has anyone out there found something like this? I will share a good site with you Flaticon - https://www.flaticon.com/ - over one million vector images (I love their round icons) for about $10 per month. But they do not have the character packs I am looking for. Thanks in advance!