These are the Simsala Grimm Yoyo and Doc Croc plush toys made by Heunec in 1999 : r/europe
Miipedia | Doc Croc (Simsala Grimm)
Transforming Doc Croc into Yoyo by Jose-Ramiro on DeviantArt
Amazon.com: Imaginext DC Super Friends Killer Croc Figure & Buggy Toy Car with Projectile Launcher for Preschool Pretend Play Ages 3+ Years : Toys & Games
Who would win? The Lizard from Marvel or Killer Croc from DC? - Quora