Restraining Bolts in Fan Works.
Crossovers
- Eren and Cinder are fitted with Shock Collars around their necks while enslaved at the Glass Unicorn in Attack on Titan A New Path
. Of course, since Eren's nape is his weak point, this prevents him from Shifting. - In The Bridge, when Xenilla heals Destroyah's injuries, he also inserts a crystal into her body which dials down her rage and bloodlust. The crystal later separates from her, but by this time she has genuinely befriended the Cutie Mark Crusaders and no longer needs it.
- If Vash of Christian Humber Reloaded drops or breaks Tetsume, his (apparently more) ruthless side takes over and he goes on a killing spree. This, the name of the sword, the fact that he repairs it with one of his fangs and that Inuyasha is one of many works referenced in the fic led the author of the webcomic to note the connection in the author's notes.
- In Code Prime, V.V. is used as the core of Nemesis Prime, taking the place of a spark in the dark Cybertronian. However, in addition to regular Energon in his new body, there is also Dark Energon, which Megatron uses to keep the Code Bearer from defying his orders.
- In Opening Dangerous Gates, the Fairy Tail rule that Celestial Spirits cannot harm or kill their summoners applies to the Bleach characters as well. Grimmjow learns this to his chagrin when he tries to strangle Lucy and can't even move his arms toward her. Gin gets annoyed at not being able to harm her and tries to kill Levy instead. Lucy quickly orders him not to harm any of her friends and he's forced to obey. Grimmjow later discovers a loophole: apparently, picking Lucy up and dropping her doesn't count as harming her.
- What If Videl Was A Z-Fighter?: Good Buu acts as this to Super Buu when it comes to Videl. Since Hercule told him about his daughter, and he can sense her similarity to her father, Good Buu holds his Superpowered Evil Side back from harming her.
- Son of the Sannin has several examples:
- When Zabuza is placed under parole and has to do missions for Konoha, Jiraiya places a special seal in his body which can be triggered to potentially kill him and also allows Jiraiya to track him on the maps to ensure that he doesn't try anything funny.
- As per canon, the Caged Bird Seal is this for the Hyuga Clan. It's later revealed that when it was first created, it was used to keep the Main House members from awakening the Tenseigan, but over the years it turned into a tool to keep the Branch House members under control. Learning this leads Hinata to abolish the practice and remove them altogether once she's named head of the clan.
- In Chapter 90, several prisoners — including Konan and the Root survivors — are restrained with chakra-dampening bracers and Shock Collars which can be activated with a hand seal.
- Villain Song (Roving Otter): Asha had a magic restraining collar placed on him to prevent Magnifico from acting out. Magnifico, while annoyed, is impressed with Asha’s growing ruthlessness.
