Simplify the following text for a Grade 8 native English-speaking person.
Original: Although ambitious and greedy , Otho did not have a record for tyranny or cruelty and was expected to be a fair emperor ; however , trouble in the form of Vitellius was marching down on Italy from Germany .
Simplified: Although ambitious and greedy , Otho did not have a record for tyranny or cruelty and was expected to be a fair emperor . However , trouble in the form of Vitellius was marching down on Italy from Germany .