To switch characters, you can talk to them in Mother's Hope. Aloy can be found near the All-Mother Tree, Varl is near the main spawn, and Teersa is found in the north of the town, on the way to the Snowchant Mountains.

"It's that blend of child-like style and mechanical substance that makes Lego Horizon Adventures a lovely game to play for parent and child pairings, though it's also just neat to see these usually self-serious characters put through a washing machine loaded with crayons."