Gintama Season 4 Episode 28

Gintoki and Tsukuyo infiltrate the Benigumoto, the Red Spiders, to get a lead on the man with the tattooed spider on his neck, but are discovered and quickly surrounded. The two manage to fend for themselves, when the man with the tattooed spider makes a sudden appearance and attacks Gintoki! The man then speaks as if he knows Tsukuyo. Who is this man?!