Paramount's Transformers spinoff Bumblebee is quickly rounding out its cast, adding a handful of young actors including Jason Drucker, Abby Quinn, Rachel Crow, Ricardo Hoyos and Gracie Dzienny, who are in various stages of negotiations.

Hailee Steinfeld and Jorge Lendeborg Jr. also will star in the film which Travis Knight, who directed the stop-motion movie Kubo and the Two Strings, is helming.

Bumblebee is the yellow and black striped Autobot that appears as one of the main characters in the Transformers film series. Plot details have not been released, but sources say the tale is a prequel to the main film series, focused on Bumblebee's life in the '80 (Paramount had no comment on the castings). It'll follow Steinfeld's character and a group of her friends as they team up to help Bumblebee. Christina Hodson (Shut In) wrote the script.

The movie project is the first spinoff in what the studio hopes will be a Transformers Cinematic Universe that will include prequels and offshoots from a line of movies that have generated over $3.7 billion worldwide. The most recent film, Transformers: The Last Knight, hit theaters June 23, and has earned $496.5 million worldwide.

Lorenzo Di Bonaventura, Michael Bay and Steven Spielberg are producing along with Hasbro’s Brian Goldner and Stephen Davis. Bumblebee is slated for a June 8, 2018, release.

The film will clearly feature a slew of young rising stars: Drucker was most recently seen in Fox’s reboot Diary of a Wimpy Kid: The Long Haul. He’s repped by Coast to Coast and Industry Entertainment.

Hoyos starred on Degrassi: Next Class and also was seen in The Belko Experiment. He’s repped by Industry Entertainment.

Quinn starred opposite Jenny Slate in Gillian Robespierre's Landline, which played at Sundance and hits theaters on July 21. She also stars opposite Joey King in Radium Girls. She’s repped by CAA and Rebecca Kitt & Associates.

Crow has appeared on the TV shows BrainSurge, Big Time Rush and Figure It Out and voiced Carla in the animated film Rio 2. She also stars on DreamWorks Animation’s Netflix series Home: Adventures With Tip & Oh and Netflix film Deidra & Laney Rob A Train. She’s repped by UTA and Untitled Entertainment.

Dzienny’s credits include TV series Zoo and Chasing Life. She’s repped by Innovative Artists and Inphenate.