Most children don't begin social play with their peers until closer to age 3 so Wyatt would not be considered delayed in regards to his social development
The headless horseman is uncredited.
Paige makes the remark about Gideon, saying he's like Obi Wan Kenobi. Obi Wan Kenobi was Anakin Skywalker and Luke Skywalker's mentor in the Star Wars universe- Prequels and Originals movies.