Marvel Animation offers Comic-Con first looks at 'What If...?' Season 2, 'I Am Groot,' 'X-Men '97'

A day before Marvel Studios' heaviest hitters take the Comic-Con stage, Marvel's animation department Friday announced details of several Disney+ series, including the second season of "What If...?"

First out of the gate is "I Am Groot," a series of five shorts debuting Aug. 10 that drop in at different points in Groot's childhood.

A short that premiered at the panel showed Groot at bathtime turning into a Chia Pet and facing off with a pesky bird.

Executive producer Kirsten Lepore said she focused on "universal activities" like arts and crafts and dress up,

but asked herself, "How do we make it sci-fi and really Groot?" (She found inspiration from her 3-year-old son.)

As in the Marvel movies, Vin Diesel voices Groot and Bradley Cooper reprises his role as best buddy Rocket.

Season 2 of "What If...?" (featuring Jeffrey Wright as the Watcher), arrives early next year

and continues to play with the multiversal versions of Marvel Cinematic Universe favorites.

The panel included a first trailer that featured a glimpse at new worlds, including one based on the "1602" comic book series,

and an episode reimagining "Captain America: The Winter Soldier" with Captain Carter (Hayley Atwell) taking on a brainwashed Steve Rogers in Hydra Stomper armor.

(Samuel L. Jackson is back as Nick Fury, Rachel Weisz co-stars as Melina from "Black Widow" and Sebastian Stan voices old man Bucky Barnes.)