The user can absorb memories selectively or not, while removing it from the source, into their body and use it in various ways, gaining some form of advantage, either by enhancing themselves, gaining the drained power, using it as power source etc., either temporarily or permanently.
May depend on the target to be weak and/or asleep to be vulnerable in this state.
Eiji Hoshimiya (Big Order); via Illegal Digger
Aruhamel (Breath of Fire)
Blindspot (Marvel Comics)
Rogue (Marvel Comics)
James Madrox/Multiple Man (Marvel Comics); via clones
Babel (Monster Strike)
Cole McGrath (Infamous); via Psychic Vision
Alex Mercer (Prototype)
James Heller (Prototype 2)
Enrico Pucci (Jojo's Bizarre Adventure: Stone Ocean); via Whitesnake
Daiya Higashikata (Jojo's Bizarre Adventure: Jojolion); via California King Bed
Wizards and Witches (Harry Potter); via use of a Pensieve
Brain Bugs (Starship Troopers)
Hazama/Yuuki Terumi (BlazBlue)
Osmosians (Ben 10)
Scyphozoa (Code Lyoko)
Xion (Kingdom Hearts)
Guardian Forces (Final Fantasy VIII); via Junction
Black Shadow (F-Zero)
Users of the Shadow Clone technique (Naruto)
Nagato (Naruto); via Human Path
Valeriana (Enchanted Garden TV Series - Echofantasia)
Miles LeComte (Heroes)
R (Warm Bodies)
Zombies (Warm Bodies)
Bec McConn (The Demonata)
Azazel (The Mortal Instruments)
Asmodeus (The Mortal Instruments)
Ingrid (Once Upon a Time); via Magic Stones
Delsin Rowe (Infamous: Second Son)
Olivia Moore (IZombie)
Headsucker (The Powerpuff Girls)
Cyber Virus (Kaijudo Rise of the Duel Masters)
Charlotte Pudding (One Piece)
Wazzat (Yo-kai Watch)
Gedächtnis Esser (Grimm)
Raem (Final Fantasy Crystal Chronicles)
Chaos (Sora No Otosimono)
Lester Crawley (Totally Spies); via blob-shaped creatures
Memory Extractor (Mr. Pickles - Brain Download)
Memory Stone (My Little Pony Equestria Girls)
Rock Troll Stones (Once Upon a Time)
Raem (Crystal Chronicles) is a conceptual being that feeds on and absorbs memories, completely erasing coherent thought and recollection and permanently altering the personalities of those whose memories it feeds on.
Rogue (Marvel) can absorb the life force and the memories of anyone through physical contact.
Robbing Leech (The Powerpuff Girls)
Olivia Moore (IZombie) is a zombie who can receive the memories and personalities of people by ingesting their brains.
Charlotte Pudding (One Piece) ate the Memo Memo no Mi and is able to extract people's memories in the form of film.
Wazzat (Yo-Kai Watch), A Yo-Kai who causes you to forget things by sitting on or biting your head, absorbing your memories
Wallflower Blush (My Little Pony Equestria Girls), absorbing Sunset Shimmer's memories of her friends by using the Memory Stone.