Ivan has gotten very into imaginative play based on favorite videos and books.
I have used his desires to motivate him to leave the house. Ivan would not leave home to get his sister. However, Linny would put on his shoes and get in the Flyboat (car) because the Wonderpets need to go to preschool to pick-up Ming Ming (Ezri) and rescue a baby frog.

He often corrects his grown-ups when they mistakenly call him Ivan. It goes like this.
A; Let’s go, Ivan.
i: You mean Spider-man.
A: Right, let’s go, Spider-man.

Dynamic Duo Inverted

This is a list of some the dynamic duo alter-egos that I have running around the house these days when Ezri and Ivan play together.

Annie (or Sludge) and Nate the Great (Amanda gets to be Rosamund)
Dora and Boots (a parent is usually Swiper)
Daphne and Scooby Doo (Eric is usually Shaggy. Amanda gets to be a monster.)
Pinky Dinky Doo and Little Brother Tyler
Henry and Annie (Amanda gets to be the drooly dog Mudge)
Twilight Sparkle and Spike the Dragon
Dot (the Warner Sister) and Yacko (the Warner Brother)
Pinky and the Brain
The Pink Flash and Spider-man
Sully (or a Pink) and Mike Wazowski (Amanda gets to be Dean Hardscrabble. Eric gets to be Randall.)
Cow Mom and Cow Baby (Amanda gets to be Cow Grandma)
Ming Ming and Linny
Uniqua and Pablo
Sunflower the Robot and Basil the Robot (Amanda is Dandelion the Robot and Eric is Creeping Charlie the Robot)
Katerina Kittycat and Daniel Tiger
Big sister ninja and Little brother ninja
Elsa and Olaf (Amanda gets to be Sven or Anna.)
Starfire and Robin (Amanda gets to be Raven.)
Underdog and Sweet Polly Squirmbread