Nergal Jr. (Grim Tales from Down Bellow) as a Nergaling has all over their powers including their sentient tendril...
....that allow him to perform various things such as creating an exoskeleton....
.....create weapons as complex as an energy gun....
...and even create a flight suit with a giant energy gun.
Minimady (Grim Tales from Down Bellow), as a Nergaling Hybrid, has her own sentient tendril that she can shape at will into claws...
...a sword...
...a bow...
...and even wings and a weaponized tail.
Junior (Grim Tales from Down Bellow) temporarily was gifted his half-sister, Minimnady's, tendril granting him similar powers....
...such has making constructs...
...and even transform into a higher state of power that was able to mimic the powers of Dark Danny...
Ken Kaneki/ (Tokyo Ghoul) has as a Half-Ghoul retained a Ghoul's natural predatory organs, Kagunes. His specific Kagune is a Rinkaku which is a tendril. Ken was able to generate up to 8 of these tendril in amount. Besides the amount of tendril, these tendril can preform various feats...
....shaping into into limbs & weapons...
...create traps & cages....
...and when activating the mutated state of his Kagune referred to as his Kakuja, Ken can alter his tendrils form at will most notably into centipedes....
.....armor and blades...
.....create limbs....
....wings....
...extending his transformation abilities to the rest of his body to alter into into a more monstrous state...
....at one point in time assuming the form of a giant centipede dragon....
...that was able to create golems called Dragon Orphans that had the powers of Ghouls......
.....he further transformed into an organic mass that flooded the streets.....
......which had parts that had semi-sentience & his organic mass also gave off an air borne chemical that transformed normal humans into Ghouls.