Friend, Rose is literally the only companion who fits that, and then only if you think quirky applies to her particularly (I wouldn’t say so).
Actually, nevermind, she doesn’t, either. She’s nineteen. None of them fit it.
I made a chart to show how wrong OP was.
The ? are for things that are ambiguous. Like, idk what the fuck ‘quirky’ means in this instance, but I’m pretty sure River and Jack both fit that definition. I can’t tell how old Jack’s meant to be in his first appearance in S1. There’s ambiguous evidence about Clara’s crush on the Doctor. Amy’s crush and then getting over the crush on the Doctor was important character development. And then, we don’t know everything about Bill yet. :D
Anyway, as can be seen, not everyone has a complete set of green boxes.
I can think of one person who would get all green boxes, though.
I love all the Doctor Who spinoffs. Torchwood, The Sarah Jane Adventures, Class, and *looks at smudged writing on my hand* kumquat.
(re tags) There’s a reasonable case to be made for K9 not actually counting as a spinoff anyway. As far as I can see, there’s nothing that distinguishes it from, say, the BBV stuff. In both cases, they’re unaffiliated productions that simply use characters that have also been in Who but are owned by their original creators who can therefore license them elsewhere.
So if you’re trying to be completist about watching them all, either you ignore K9 entirely or… well, I’ve got news for you.
Re the tags (scriptscribbles), it’s most likely a reference to the way the London Underground has these signs at the bottom of every long staircase. So people who’ve decided to walk up rather than use the lift have the opportunity to reconsider; or, perhaps, if someone collapses halfway up they can say “Well, we DID warn you…”
THIS THINGS I BELIEVE
