This is pretty simple: weapons getting pulled out of people. In some settings, it's only one or two people who can do it; in others, it's just the way things are. In some cases, the weapon's appearance and type will be based on the personality of who it's coming out of.
See also Spontaneous Weapon Creation.
- In Revolutionary Girl Utena. At first it's just Anthy, but in the second and third arcs, all the duelists have this happen to them, either violently or consensually.
- Shitsurakuen has this as a mechanic of the game that encompasses the entire school.
- Guilty Crown: this is Shu's power.
- In Dragon Ball Z: Dead Zone Goku battles two minions who rip swords out of their bodies.
- Arashi Kishuu from X1999 pulls her Cool Sword out of her own palm when needed.
- This also happens in the second season of Black Butler (anime only) - Hannah Annafellows is also known as 'The Sheathe of the Demonic Sword' - hidden inside her body is a BFS which is the only weapon capable of inflicting final death on a demon. The process of getting it out is... nasty.
- Saiga in Beet the Vandel Buster appear in this fashion. The weapons are often indicative of the abilities, if not the personality, of their wielders.
- FLCL: Haruko repeatedly pulls robots and guitars out of Naota's head.
- Orochimaru from Naruto stores his Kusanagi sword inside his body and frequently pulls it from his own mouth to fight.
- Some magical girl powers in Puella Magi Madoka Magica work like this, as we do see Sayaka pull a sword at one point. Mami is somewhere between this and Bag of Holding, in that she can grab guns from anywhere in her clothes.
- The film version of Scott Pilgrim vs. The World also features this.
- The Fifth Element: Dallas pulls the stones, which are fragments of the Ultimate Weapon, out of the body of the opera singer.
- Videodrome has the main character pull a gun out of his body. It's rather unpleasant.
- While in the Mortal Kombat games, Scorpion's spear was just something he threw, in the movie, it comes from inside his hand. It's also a Living Weapon.
- Labyrinths of Echo had Max became a storage of an ancient king's sword, to turn him "less alive" and less of a death magnet. He removed and replaced it several times, but tried to avoid this, since it hurt like being stabbed for real. Until Max gave the sword away, whenever he should have been killed by magic he instead found himself in sharp pain, with torn clothes, a sword hilt sticking out of the sternum and looking not much better than a corpse (it hurts a lot). This was even exploited for intimidation value.
- In the Book of Revelation, Jesus is described in a vision by John as having a sword coming out of His mouth. Keep in mind, though, that the book of Revelation is rather...figurative, at times.
- Power Rangers Time Force had a Big Bad with the ability to pull weapons from his body. It looked agonizing.
- In the Heaven's Feel route of Fate/stay night, Shirou suffers a Super-Power Meltdown, in it's final stage it manifest as Power Incontinence, and since his main hability is to Summon and Materialize Weapons(mainly Swords), they start coming out of his body, while it is quite painful and reduces his mobility, on his final battle it helps him giving him an edge over his enemy.
- The Legend of Zelda: Skyward Sword: We know Fi's the Goddess/Master Sword, right? Well, Ghirahim is actually a sword too, and when Demise is resurrected, Demise yanks the sword that is Ghirahim right out of Ghirahim's body.
- Steven Universe:
- Pearl's method of summoning her spear is to pull it from the gem in her forehead. Though all Gems summon their weapons from their gem, hers is the most obviously "pulled out". She can also store random objects in her head.
- Garnet is shown storing an object in her gemstones in an early Season 1 episode, "Serious Steven", but it's later implied that this ability is unique to Pearls.
- Lion also keeps a weapon in his head— Rose's sword. Both examples have visual nods to Revolutionary Girl Utena. Apparently he can also keep stuff in his throat, no Pocket Dimension involved.
- In a more physical version, the fusion of two Topazes unfuse and fuse again on both sides someone, trapping them in her body. The fused Topaz is so huge that she can easily walk around with multiple people stuck inside her. This is apparently the standard method of transporting humans taken captive by Homeworld. There no risk of her suffering organ damage because her Hard Light body seems to be a solid mass with no internal organs.
- In My Little Pony: Friendship Is Magic, Pinkie Pie does this. She keeps a very large stash of items in her mane, including her ubiquitous party cannon.