The Pilot is an Artifical Lifeform in the shape of a human.
The Pilot is a youth
The Pilot hate his existence.
The Pilot question about his own existence "Why are humans so foolish?"
The Pilot has not only access to information on Earth, but the Space Elevator and the Colonies as well.
He can gain acess to Level 7 Plan and all other neccessary information
He has both Gundam and Veda in his grapse. So he can reconstruct the world as he see fits.
The O Gundam was sent all on mission to eradicate all lifeform on the Kurdish Battlefield.
When the Pilot noticed about Setsuna.
And feels about what Setsuna is believing the O Gundam to be. He got softhearted and let Setsuna live.
From the main monitor, the Pilot looks into Setsuna's innocent eyes and finally realise the reason for hi existence.
He believes himself to be on a higher plane of existence above humans.