Preparation Stage
Is it necessary to sexually harass people?
Yes and no.
Mostly no, even if I do enjoy the hilarity that ensues.
Aside from returning the much-needed law and order back into the world, Legion is actually breaking down people's body when he devours them via the countless avatars that are flying all over the place and scaring the craps out of people.
The stripping and subsequent dissection is to scan their biology and to map out their genetic makeups, since their clothes and whatever they have on their person will just get in the way.
For science!
Their entire memory is also get downloaded and deciphered in the process.
Once I have what I needed, Legion will put their body back together again.
And as a bonus, Legion will also fix whatever wrong with their body, giving them perfect health, before regurgitating them.