10 Oldest Mutants In X-Men History
5. The Externals - 10,000+ Years
The Externals are a race of ancient mutants who manipulate society for their own gain. Although there are nine members, the main ones are Nicodemus and Saul. Their exact age is indeterminable but they bared witness to the collapse of the Hyborian civilisation, meaning they are at least 10,000 years old.
They could be far older since Nicodemus stated he's "as old as the Swiss mountains" and Saul alleged that the continents shook as the land formed in his lifetime. However, claims such as these may have been exaggerated in order for the Externals to highlight their age.
When Saul and Nicodemus discovered their immortality, they realised they had a psychic-link with one another, which encouraged them to seek out other Externals.
Believing they were destined for great things, the Externals banded together to do what every immortal does - take over the world. (It's not an original motivation but it pays the bills, okay.)
Working behind the shadows since the dawn of mankind, the Externals have created many civilisations in their name while bringing others to their knees in order to maintain political control over the world.