Chucky vs. Slappy the Dummy

Both are technically invincible, but if one were to be destroyed first, the other could have time to think of a way to exterminate the soul as it finds a new host. Considering that Chucky is hands on, he could probably kill quicker, but slappy is more competent when it comes to completely removing threats. On a radical scale, Chucky would probably win, as Slappy would keep getting a host over and over and Chucky would kill said hosts, until there is nothing left. Slappy would be left hostless, so basically, dead. In conclusion, Chucky would win.