What skin(s)/bling are “Proceed with caution” for you in game?

[1]

The thought has often been in the back of my mind as I play. It seems that there are certain skins I use or that others use that just kinda let you know, ok, def not a bot or easy kill, best to approach this a bit more strategically and proceed with caution.

Are there any particular skins, back blings, pickaxes, or emotes that just let you know to be a bit more careful?