Monsters vs. Aliens (2013)

S1E16 98 Pound Cockroach

In an effort to gain the strength needed to conquer an obstacle course, Dr. Cockroach modifies his genetic balance, aiming for a blend of 40 percent human and 60 percent roach. However, this adjustment backfires as his roach characteristics grow stronger, diminishing his human intellect. As the situation worsens, his teammates scramble to discover a solution to bring him back to his original state before it's too late.