"I am Vegeta, Prince of all Saiyans! I am the legend, the Super Saiyan terror of your nightmares! I am death, brought to life!"
"Vegeta's head jerked again. This time, a flash of golden-yellow light rippled through his hair and vanished as his head dropped again. The sudden flash seemed to encapsulate that moment, freezing it in time."
Achilles' Heel: Android 16 delivers a devastating blow which does such significant damage to Vegeta spine that not even advanced medical technology could completely heal it. It requires a metal substitute that restores normal functionality, but leaves him unable to channel ki effectively into it, making his defenses weak in that area.
This saves him from getting absorbed by Cell early on
It also gets abused, though unknowingly, by Cell in the final battle.
Back Stab: Imperfect Cell ambushes Goku and attacks him with a Death Beam through the chest and then fires a massive Kamehameha before Goku can react, seemingly destroying him. Unbeknownst to Cell, Goku survives.
Battle Trophy: A particularly gruesome example in the form of Frieza and Cooler's severed heads, affixed to the front of Vegeta's Cool Ship.
Practically a Running Gag. Vegeta is the only thing standing between Frieza's servants and Cooler's takeover. Then, Vegeta is the first responder to King Cold, who plans to conquer and sell the Earth. Then, in one future, Vegeta kills Goku and is later killed by the Androids. In the Androids timeline, Hoi causes the release of Hirudegarn, and the events that transpire lead to Tapion's death and eventually Future Gohan's.
Anybody who knows the series knows what the Android Saga inevitably leads to, despite the numerous victories of the Z-Fighters and even the gradual change of heart from the past versions of 17 and 18
This is destined to happen anytime Cell survives something that should kill him.
Hope Spot: You may as well call the entire Cell Saga 'Hope Spot Saga.'
Idiot Ball: Goku failing to check if Cell definitively died after he self-destructed on Namek (Which is rendered indestructible). This is especially jarring after all the times that Cell has survived situations that should have killed him before.
Infinity+1 Sword: Future Trunks' sword that he gained after he was forced to kill Tapion has the power to cut through any living evil in a similar manner to Spike the Devil Man's Devilmite Beam. It doesn't work on the androids due to their mechanical nature.
In Spite of a Nail: Just like DBZ canon, murderous androids are released and a dark future is formed. In fact, many of the same antagonists and battles happen, almost as if the universe is course-correcting. Naturally, this includes many instances of Necessary Fail.
In response to Vegeta, Goku and Trunks defeating King Cold, Dr. Gero created another energy absorbing android: Android 21.
The author created C47, an droid companion to Vegeta who is essentially a Dragonball version of Knights of the Old Republic's HK-47. C47 later had the components of the defeated Android 21 incorporated into his system but was limited by the lack of a battery. However, after Android 16 was destroyed in the battle with Cell, Bulma and Oniya incorporated 16's energy source into him, making him as strong as 16 was.
Vegeta gains a ship appropriately entitled "Bringer of Death". He gets a crew to go with it, but most notable is the ship's engineer/first mate Oniya. Romance begins to bloom between Vegeta and Oniya and for a bit it looks as if Oniya will replace Bulma as Vegeta's love interest. This is proven false as soon as the crew lands on Earth when Oniya is killed by a black mist infected Yamcha. Though Vegeta briefly grieves over her death and Oniya is later revived, Vegeta and Bulma develop their romance during her death and the subplot is quickly dropped.
Wemu, Cui's brother. He's just as strong as Cui was and gets killed just as easily by C47.
Monster of the Week: Garlic Jr. appears for one chapter, gets absolutely destroyed by Vegeta and hasn't been seen or mentioned since.
Shown Their Work: A Meta Example: David applies his knowledge of physics in attempting to, as accurately and effectively as possible while complying with the knowledge supplied from the manga, manga supplements, as well as Toriyama himself, explain many of the things that happen in DBZ. And they do, indeed, make quite a lot of sense. This doubles as a Crowning Moment of Awesome.
Super Mode: The Saiyans have Super Saiyan, Freiza and Cooler have their forms and King Cold uses his Third and Fourth forms in his fight against Vegeta, Goku and Trunks.
Title Drop: Vegeta's flagship is named as such. Also appears in the first few chapters and chapter 78 whenever Vegeta severely beats or kills his opponent.