The First Doctor, Ian, Barbara, and Vicki

There aren’t a ton of stories with Ian, Barbara and Vicki, but the ones that exist are pretty good. Ian and Barbara are pretty comfortable in the TARDIS by this point, and not as fixated on getting home (until they actually do). Vicki is the “new one” for a while, but it’s clear that although the Doctor dotes on her as a replacement for Susan, she’s not as passive or obedient as Susan could be.