Following their 1-1 draw with VfL Bochum on Saturday which saw them slip to 16th on the table, the club sacked the 37-year old who wished the club well going forward.
"It was a moving year and we achieved amazing things," Babbel told reporters after the club announced his sacking in a statement.
"I wish the new coaching staff all the best and hope they will find the button to reignite the team. I did not find that button."
"I am here to save what is left to save," Gross said in a press conference.
"I want to take the team back on to the path of success," he added, before leaving for an evening training session with his players."