Merging is the ability to combine two or more objects, animals, plants or people together.
- Lucia Petrelli has this ability naturally.
- Noah Gray has mimicked this ability.
- Abbie Gray has also mimicked the ability.
- In World 2, Peter Petrelli has absorbed the ability from his youngest daughter.
- Haley Jagune also has this ability naturally.
The ability can be used to combine several items or beings, both organic and inorganic, but it is unknown if an organic being can be merged with an item. When it is done, a fully functional new being or item is produced which is a mixture of the originals. The mix can be altered by focusing on which characteristics one desired to be preserved or lost. With people, the resulting new person will have all the abilities the originals had, and his or her appearance and personality will be a mixture of the originals. The ability cannot reverse the process. The merging is done by holding the two objects together, and a glowing light is emitted. It is also possible to merge without direct contact, but this is more difficult.