In the 1993-1995 run of Robocop comics he is shown to have underwater capabilities, his legs have built in propellers and he is totally water proof, I know, it sounds ridiculous, but comics are pretty ridiculous. I also made all of that up.
@Mantis Tobaggan, I know it sounded ridiculous, but a lot of things are ridiculous. You fvcking had me believing it
@Mantis Tobaggan, I mean one of the movies straight-up gave him a jetpack, which is just as stupid.
You've bot to be kidding me
Danger Will Robinson
R2-D2 is canonically waterproof - He fell into the swamps of Dagobah and was just fine.