Trivia: In the Season 3 episode "Feral Scream, Part 2," Optimus calls Depth Charge a "hardhead." Hardhead was an Autobot who appeared in the Transformers: Headmasters comic. Coincidentally, part of Hardhead's file reads: "The only way to get Hardhead to follow advice is to persuade him he came up with the idea himself. He knows only one way to do anything - his way." Sounds a lot like Depth Charge's mentality to me.
Trivia: The Golden Disc that Megatron stole from Cybertron is the same disc placed on the Voyager spacecraft. You can even see the words "Sounds of Earth" printed on it several times across the series. You can check out what the disc actually looks like here: http://www.solarviews.com/cap/craft/sounds.htm.
Trivia: Tigatron and Black Arachnia weren't supposed to appear in the show originally, and so their action figures were just repaints of Cheetor and Tarantulas, respectively. When they were chosen to join the teams (Tigatron in place of Wolfang, Black Arachnia on her own), the animators panicked because they had no body casts to work with, and made up their looks on the fly.