Why was Visser 3 on Earth?

[NateSean]

The real tragedy about Visser Three is that he could have been a far deadlier and far more dangerous enemy than he was.

All that time in the Andalite body gave him a degree of their arrogance, which is probably a huge part of the reason why he missed stuff going on right in front of him.

*Cough*Jakemorphingfromflearightonbladeship*cough*

[Darth Zakryn]

Plus Alloran himself was already more than slightly off his rocker, which Visser Three probably absorbed by being in his body for years at a time. Take a look at the Visser Three in the Hork-Bajir Chronicles and then the Visser Three we got in the series. It was definitely Alloran's insanity that drove Visser Three over the edge, IMO.