First, we got to know Groot in Guardians of the Galaxy. Then we met Baby Groot. By the time Avengers: Infinity War came along, he'd grown into a moody teenager, completely attached to his handheld device, or phone, as we still call them. LEGO sculptor Ochre Jelly (Iain Heath) has recreated that version of Groot out of LEGO pieces- and he's posable, which means he can check messages, play games, and listen to music wherever he happens to be.
Ochre Jelly used his own phone-obsessed kids as inspiration for the series. See more pictures of Moody Groot in his Flickr album. -Thanks, Iain!