The Flash (Kingdom Come) can not only detect those in other dimensions, but interact with them as well.
Detect cross-dimensional portals or barriers
The user can sense activity in these portals from their own world. They can go so far as to detect the outer reaches of a dimension, even breaking the fourth wall.
- 4th Wall Awareness: the ability to realize that the world they are living in is a comic/television/video game. People with this power tend to appear insane to the people who believe the world around them is "real".
- The Flash (DC Comics)
- Deadpool (Marvel)
- Uatu the Watcher (Marvel)
- Doctor Strange (Marvel)
- The New Gods (DC Comics)
- Olivia Dunham (Fringe)
- Most Family Guy Characters (Family Guy)
- Chowder (Chowder)
- She-Hulk (Marvel)
- Susan (My Family)
- 80's Raphael (Turtles Forever)
- Rex Salazar (Generator Rex)
- Ultraman (DC Comics)
- D'Hoffryn (Buffy the Vampire Slayer)
- Gwen Tennyson (Ben 10)