There's more than meets the eye with these Transformers -- in this case, it's the bond between a father and son.

Yu Zhilin and his son Yu Lingyun reside in the Hunan province of China. They were farmers until 2010, when Yu Zhilin decided to start metalworking and enlisted his son's help. Despite being self-taught, the pair got their start by using car parts to build impressive replicas of everyone's favorite robots in disguise, the Transformers, in the style of the current Michael Bay-directed films.

Their remarkable tale is the center of a Great Big Story mini-documentary, titled "How a Father-Son Duo Turns Trash Into Transformers." "Painters have brushes, we have torches," Zhilin says in the video. "It's like art. I want to pour my heart into the work." Enjoy some day-after-Father's Day feels and watch below:

It took the Yus only a month and a half to build their first, 7-foot-tall Transformer. Since then, they've gone on to build even larger and more impressive models -- their biggest one is 49 feet tall.

Zhilin and Lingyun have also branched out to sculpting their own incredibly impressive, incredibly unique pieces. "Every part is a piece of art. We are combining all those small pieces of art into a big artwork."

The next Transformers movie, Transformers: The Last Knight, is in theaters this Wednesday, June 21.