On August 16th, the Titans officially announce their signing of Tizi. He should be able to play since the rumors of his signing have been around well before the roster lock. In the team’s first meet & greet several members even mentioned Tizi as a person they’d like to see join the team in the future.
Tizi played with RunAway in 2017 while Bumper, Stitch, and Haksal were in the lineup but in those iterations of the team Bumper played Lucio. Tizi later played with Hooreg on the London Spitfire until they cut 40% of the team.
Tizi’s Orisa and Wrecking Ball is an upgrade over what Bumper has shown so far in stage 4.