This is a result of using very advanced ki manipulation to compress the energy to the point of being hermetically sealed so that nothing more than voices (in an atmosphere) or low energy photons, such as visible light, can pass through it. It seems that anyone who can use ki can use the technique, however it may require some practice. Depending on the strength of the user, an energy shield can be strong enough to completely withstand being caught in the destruction of a planet, as demonstrated by Broly's first use of his infantile powers during Frieza's Genocide against the Saiyans.
Energy Shield is first seen when Goku uses on while charging a one-handed Kamehameha during his second battle against King Piccolo. Later, Goku uses an energy shield as an adult to protect himself from the combined energy waves of Daiz and Cacao. Gohan uses it to stop him, Krillin, and Piccolo from being sucked into the Dead Zone during the Garlic Jr. Saga, although this was most likely a stronger version as it was able to stop them from being pulled in the slightest. Future Gohan also uses an Energy Shield, called Evil Barrier, when he fights the androids for the second time in Dragon Ball Z: The History of Trunks. It is also seen in one of Vegeta's flashbacks being used by his father, King Vegeta.
After being absorbed by Super Buu, Vegito used a skin-level Energy Shield to prevent him from being completely assimilated into the monster. This technique is called Saiyan Shield in the Raging Blast series.
Lord Slug used an Energy Shield to counter Goku's first blast on him in the movie Dragon Ball Z: Lord Slug. Broly (as a baby, no less) uses it to save himself and his father, Paragus from a dying Planet Vegeta. Broly's energy shield even allows him (and others if he chooses) to survive in the vacuum of space (or even within molten lava).
The only technique used by Dr. Raichi in the OVA Dragon Ball Z: Plan to Eradicate the Saiyans and its remake Dragon Ball: Plan to Eradicate the Super Saiyans, is his barrier technique named Dark Spirits. The Destron Gas Machine he sent in West City also is protected by cybernetic Energy Shield which is capable of supporting even the power of Vegeta's Photon Bomber.
It is seen several times in Dragon Ball Z: Broly - Second Coming, first when Gohan uses it to shield Goten, Videl, and Trunks from one Broly's energy blasts; later Broly again uses it to escape from a sea of lava, and lastly, he briefly attempts to use it to block Gohan, Goten, and Goku's Family Kamehameha, but breaks apart and is rocketed towards the Sun and is defeated.
Types of Energy Barrier
Red Ribbon Androids have their own version of the Energy Shield known as the Android Barrier. The Android Barrier was first used by Android 17 (his is bluish-green in color) to block Piccolo's Hellzone Grenade. Android 18 is also equipped with an Android Barrier (hers is pink in color), though she rarely uses it. In the movie Dragon Ball Z: Super Android 13!, Android 15 used the Android Barrier to protect himself from Future Trunks' Continuous Energy Bullets. Super Android 13 is also equipped with an Android Barrier (used in video games, his is red in color, same as his ki attacks).
Semi-Perfect Cell used a barrier in order to completely absorb Android 18 without interference. Perfect Cell uses an even stronger barrier version (the largest of all barrier techniques), called the Perfect Barrier, during the Cell Games. In Dragon Ball GT, Super 17 retains his original barrier, but it also seems to gains the ability to absorb ki-based attacks (the barrier is invisible during this process), this is called the Absorption Barrier.
Android 18 can use the barrier in Dragon Ball Z: Buyū Retsuden to defend herself against super attacks. In the Budokai series and Super Dragon Ball Z, the barrier is called Energy Field, and is used by both Android 17, Android 18, and Cell (in his second and later transformations). In the Budokai series, both Android 17 and Android 18 have it as an offensive move that expands outward to attack the opponent. In the Supersonic Warriors series, Android 17 performs the technique whenever he is summoned, and Android 18 and Android 20 can use it for defense under the generic name of Ki Shield as part of the game's mechanics. In Dragon Ball Z: Burst Limit, Android 17 and Android 18 can charge an energy shield in their hands and use it offensively; this is called Pinpoint Energy Shield. The androids can also use energy shields in Dragon Ball Z: Ultimate Battle 22, and Dragon Ball Z: The Legend. In Dragon Ball Z: Budokai 2, Super Buu can use the Energy Field after absorbing Perfect Cell. In Dragon Ball: Xenoverse, Android 17's version is called Energy Field while Cell's is called Energy Barrier. Despite not being an Android, the Future Warrior can learn and/or obtain both of these techniques in Xenoverse.
The Ki-based shields are most common type of energy shield used by various fighters throughout the series such as Goku, Gohan/Future Gohan, Vegeta, and Broly. Sometimes in the main series and video games, an Explosive Wave-based technique, Kiai (Spirit Shot & Angry Shout), or even a powerful aura (Hyper Guard, Power Guard, & Vanisher Guard) can be used defensively to nullify attacks functioning as a both a form of energy shield as well in some cases as an offensive technique, with additional effects such as pushing back and/or damaging the opponent. During the Vegeta Saga, Nappa was the first person in the series to demonstrate that a powerful aura can be used to nullify attacks through his aura-based Hyper Guard technique. In Dragon Ball Z: Bojack Unbound, Bojack uses his own aura-based technique called Power Guard.
In Dragon Ball: Xenoverse, there are several ki-based energy shield/barrier techniques: Super Guard, Spirit Boost, and Force Shield. Explosive Wave, Super Explosive Wave, and Break Strike are Explosive Wave techniques can double as energy shields as well. The Kiai-based Spirit Explosion and Angry Shout can function as energy shields as well. The game even features an aura-based technique used by Super Saiyan 4 Gogeta called Vanisher Guard. Most of these techniques are Evasive Skills though some like Spirit Boost and Super Guard are defensive Super Skills. Super Saiyan Blue Vegeta uses an counteroffensive ki-based energy shield called Counter Burst where he projects an energy shield that upon being hit by an energy based attack allows the user to counterattack with an even more powerful ki blast of their own. Most of these techniques can be either learned and/or obtained by the Future Warrior.
The evil wizard Babidi has a green/yellow energy shield called Wizard Barrier. Only in the anime, Majin Buu uses a similar barrier, called Protective Bubble, to protect himself when the Earth's Military attacked him.
Through her mystical powers of the air, Oceanus Shenron is able to create a powerful modality impenetrable shield (actually semi-impenetrable because its weak point is the eye of the hurricane). She calls it Invisible Forcefield, and uses it to fend off all kinds of offensive and energy attacks.
Dr. Wheelo has his own fiery-red energy shield/barrier which is generated by his robotic body and is simply called Barrier.
The Pilaf Machine has a white-blue shield/barrier, called Pilaf Barrier.
- Gohan/Future Gohan (Evil Barrier, Tenma Defense)
- Pilaf Machine (Pilaf Barrier; mechanical)
- Dr. Wheelo (Barrier; mechanical)
- Namekian Warrior
- Cooler (Psycho Barrier)
- Android 18/Future Android 18 (Android Barrier)
- Android 17/Future Android 17 (Android Barrier)
- Android 15 (Android Barrier)
- Super Android 13 (Android Barrier)
- Dr. Raichi (Dark Spirits)
- Semi-Perfect Cell / Perfect Cell (Energy Field / Perfect Barrier)
- Broly (knew it as a baby)
- Bojack (Psycho Barrier)
- Babidi (Wizard Barrier)
- Majin Buu (Wizard Barrier; Anime only)
- Super Buu (Energy Field; after absorbing Cell, in Budokai 2 only)
- Vegito (Saiyan Shield, used to keep himself from being absorbed by Super Buu)
- Tapion (Hero's Flute, produced via a playing a special tune on his magic ocarina)
- Majuub (used to keep himself from being digested by Baby Vegeta)
- Super 17 (Android Barrier & invisible Absorption Barrier)
- Oceanus Shenron (Invisible Forcefield)
- There are some techniques where the user's ki aura is used both for attack and defense. For example, the Nova Strike executed by Frieza, the Gigantic Slam executed by Broly, and Buu Rocket performed by Kid Buu, whose performances and functions of both the missiles are similar.
- ↑ 1.0 1.1 Daizenshuu 7, 1996
- ↑ Dragon Ball Z: Legendary Super Warriors, 2002
- ↑ Future Gohan's version - Dragon Ball Z: Budokai Tenkaichi 3, 2007
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 Dragon Ball Z: Supersonic Warriors, 2004
- ↑ 5.0 5.1 Dragon Ball Z Collectible Card Game, 2000
- ↑ 6.0 6.1 Dragon Ball: Xenoverse
- ↑ 7.0 7.1 7.2 Dragon Ball Z: V.R.V.S., 1994
- ↑ Dragon Ball Z: The Tree of Might, 1990
- ↑ Dragon Ball Z episode 47, "Namek's Defense"