Body Manipulation, Liquefaction, and Regeneration – As a side-effect of his liquefying ability, Baby's body is malleable and can form different shapes; in his adult form, he forms himself into a ball, right after, escaping Vegeta's body. Additionally, he can regenerate himself so long as one single cell of his body is intact, as shown after his apparent destruction at the hands of Goku, Trunks, and Pan on M-2. Baby's liquefying ability is called Liquidity in the Dragon Ball Z Collectible Card Game.
Possession and Tsufruization – Baby liquefies himself in order to enter through a cut or scrape in his target's skin. Although he has some strength of his own, Baby's combat abilities are best suited to exploiting the full potential of a host body. It appears that when he has chosen a permanent host, he begins to alter the host's appearance to mirror his own (as evidenced by the appearance of Super Baby Vegeta). As he gains more power through possession, Baby's own physical body appears to mature as well. In his first appearance, Baby is a skinless, mechanical infant. When he appears before Goten, he is blue-skinned and appears to be somewhat of a teenager, with facial markings and his standard outfit. Finally, when he escapes Vegeta's body, Baby's shape has reached adulthood. Baby's state of puberty is apparently met upon his first transformation as Baby Vegeta, as evidenced in the Japanese dub by his voice becoming raspier. After possessing a host, Baby combines their power with his own. He decides whether to plant an egg inside the victim before leaving them, or to completely seize their energy. The eggs he inserts in potential victims eventually hatch, releasing a substance that alters their mind into becoming willful servants to the parasite. He also gains the ability to assimilate the techniques of those who he has possessed, although under his usage they emit a pink aura rather than the color they emit when used by their untampered host. Potential victims appear to be the most vulnerable when they are at the pinnacle of their power, as Baby waits for Goten, Gohan and Vegeta to ascend to their Super Saiyan forms before possessing them.
During his fight with Vegeta, Baby Gohan and the possessed Goten trap Vegeta in a ball created by the two flying around him at high speeds. While in this ball, Baby seems able to create ghost-like images of Gohan and Goten, both speaking with the voices of Gohan and Goten.
Evil Plans – The physical attack used by Baby to kill Dr. Myuu on M-2. Named in the Dragon Ball Z Collectible Card Game.
Revenge Blast – A technique used by Infant Baby where he releases an Explosive Wave through his scream, causing severe damage to his surroundings. As Great Ape Baby, his screams are capable of causing collateral damage. Revenge Blast is Baby's special technique in the arcade game Dragon Ball Heroes, and the regular Explosive Wave is one of Baby Vegeta's Blast 1 in the Budokai Tenkaichi series.
Eye Flash – A technique similar in essence to the Solar Flare, where Baby releases a bright flash of light from his eyes, blinding his opponents temporarily. The version used by Adult Baby is called Imminent Destruction in the Dragon Ball Z Collectible Card Game.
Final Flash – A technique Baby Vegeta uses against Goku and Uub. In the Japanese dub, when he performs the Final Flash, he declares "Big Bang Attack" launching the blast. In the FUNimation dub, this was changed to Baby calling out "Final Flash" (possibly to avoid the confusion experienced with the Japanese dub, coupled with the fact that FUNimation Entertainment's dubs have never used the words "Big Bang Attack"). It is called "Final Flash" in his first two forms in Budokai Tenkaichi series, but "Big Bang Attack" in his third form. It is also correctly called in Dragon Ball Z: Infinite World.
Revenge Death Ball – A technique used by Baby Vegeta. It is a large black ball of ki that would have killed Goku had Supreme Kai not rescued him at the last minute. This technique is similar to the Spirit Bomb, as Baby has to draw energy from his slaves in order to use it. However, this accumulation of power is only needed once, with the power being evidently stored within Baby Vegeta's body, as he is able to generate it at will upon each subsequent use.
Hi-Tension – One of Baby Vegeta's Blast 1 in the Budokai Tenkaichi series.
Full Power – One of Super Baby Vegeta 2's Blast 1 in the Budokai Tenkaichi series.
Great Ape Baby
Crushing in Hands – Golden Great Ape Baby Vegeta grabs his opponent in a powerful grip and crushes their bones. Baby Vegeta used this technique in an attempt to crush Super Saiyan 4 Goku. Crushing in Hands is Great Ape Baby's Throw in the Budokai Tenkaichi series.
Gigantic Flame – A technique used by Great Ape Baby. He launches streams of intense flames from his mouth capable of engulfing much of his city in a blazing inferno.
Super Galick Gun – Great Ape Baby's full-powered variation of Vegeta's Galick Gun, capable of destroying an entire planet if appropriately charged. Baby uses the Super Galick Gun while Vegeta's body is in the Golden Great Ape transformation.
Continuous Super Galick Gun – A technique used by Great Ape Baby as a frenzied attempt to destroy Super Saiyan 4 Goku. Baby prepares the wave of a Super Galick Gun, but only releases concentrated energy bullets from within it.
Explosive Wave – Used against Super Saiyan 4 Goku. This is one of his Blast 1 in the Budokai Tenkaichi series.
Howl – As Great Ape Baby, his screams are capable of causing collateral damage. Howl is one of Great Ape Baby's Blast 1 in the Budokai Tenkaichi series.
Evil Energy power up – Baby is given the evil energy power up by Demigra's Wormhole in Dragon Ball Xenoverse. When using the power up, Baby's eyes glow red, his skin darkens, he gains a purple and black aura temporarily, causing his power to increase.
↑This is supported when he says "Yes, that's exactly what I'm looking for. The peak of your Saiyan power" when Goten powers up to Super Saiyan and later "That's it. Just release this one blast of energy, and your physical power will top out" shortly before entering Goten. Even later, when fighting Gohan as Goten, Baby says to himself "Does [Gohan] know somehow that I wait for the moment that they power up before I make my move?"