Josh Kirby... Time Warrior: Planet of the Dino-Knights (1995) on Netflix

Plot summary

In the 25th century, humans find an alien device called the Nullifier, which is said to be able to destroy the universe. Irwin 1138, the second-greatest mind of his era, splits it into six pieces and scatters them through time to stop his rival from wiping out the universe with it. Dr. Zoetrope, the greatest mind of the age, sets out to gather and reassemble the pieces, riding in powered armor while Irwin trails him in a time pod. The chase brings them to 1995, where a piece has fallen in the garden of Josh Kirby, a 14-year-old boy. Zoetrope takes it and vanishes into the time stream, and Irwin follows, pulling Josh along by accident. With no way back to 1995, Josh joins Irwin and his alien companion Prism in the race to collect the remaining pieces.