Unfortunately for them, I happen to be made out of depleted uranium, which means that the explosions don't do any damage.
The next user is a ball of antimatter inside a particle accelerator. The walls of the accelerator are made of regular matter, and beyond that is more regular matter in the form of air.
I take out of my disguise and turn into my real form. The strongest alien ever and eats everything. I have tentacles that has sharp ends. I suck in everything and eat them. I fly back to earth and kill you. Then i turn back into my disguise again.
Next person is going to be killed by me.
The stomach acid breaks down the explosives and prevents them from detonating.
The next user is trapped inside a nuclear waste canister and buried 2000 feet underground.
Simple, since the metal is a better conductor than water, the current goes through the siding and into the ground.
The next user uses SCP-876 on themself, causing all of the calcium in their skeleton to be replaced with uranium.
I eat everything remember? NOM NOM NOM.
The next person is going to be forced to listen to this forever. http://youtu.be/aQQeg3jYgOA
Approximately one second into the video, my internet connection fails again. (stupid Charter)
I place the next user inside SPC-536, and lower the speed of light down to zero.