How Red Hood’s Parents Met
Jason Todd was named after his grandfather, good to know. From – Red Hood and the Outlaws Vol. 2 #23
Mister Freeze (Harley Quinn Vol. 3 #38)
From – Harley Quinn Vol. 3 #38
Robin And Donatello VS Mister Freeze
From – Batman – Teenage Mutant Ninja Turtles II #2