You can watch the animated superhero series Invincible streaming on Amazon Prime Video. It is available both on the regular Amazon Prime Video service and Amazon Prime Video with Ads, including a free-with-ads option on Prime Video Free with Ads

. The series has multiple seasons available, and you can start with a 30-day free trial if you are not already a subscriber

. Additionally, Invincible is accessible on Roku through Freevee or Prime Video channels if you use that platform

. Be cautious about unofficial streaming sites, as they may not be safe or legal

. The safest and most reliable way to watch Invincible is through Amazon Prime Video and its associated services.