In my opinion, Julius Caesar was bad.
(1) He attempted a cover-up of the Catilnarian conspiracy by opposing a trial for the accused. His motivation may have been to hide his own foreknowledge of the traitors' plans (being an intimate of those involved). Moreover, his recommendation of exile for the accused would have let the traitors join Catiline on the fields of war, where they could have passed valuable information to their rebel comrades.
(2) While consul, he had M. Porcius Cato arrested merely for voicing his opposition to Caesar's hare-brained schemes. The move was so extraordinarily illegal that the whole Senate refused to meet until Cato's release.
(3) In Spain and in Gaul, Caesar betrayed the interests of Roman allies by sacking their towns and enslaving Roman friends. His motivation in both cases was merely to run up a body count so he could celebrate a triumphal parade in Rome. His campaign in Gaul (where he mercilessly slaughtered and enslaved perhaps a million or more tax-paying trading partners of Rome) finally led to the threat of prosecution for his illegal crossing into German territory.
(4) Rather than face prosecution like an honorable Roman or even go into temporary exile (as Cicero had once done), Caesar waged war against the Republic by illegally crossing the Rubicon with the 13th legion. Taking Rome essentially by surprise, he confiscated the entire Roman treasury for his own personal use.
(5) The Civil War he launched wiped out the cream of the Roman Senate and their best generals, including Pompey and Caesar's best officer Labienus (who refused to join Caesar in his traitorous mission).
(6) Once victorious over all his old enemies, he had himself declared a DICTATOR FOR LIFE. In this role, he immediately cancelled all elections for lower offices, abolished the power of the tribunes (who were the representatives of the people of Rome), and personally selected Yes-Men for the office of consul (which had been the highest-ranking elected position in the old Republic). Laying the precedent for future serfdom (and anticipating Stalin's Berlin Wall), he forced 20 - 40 year old Italian civilians to remain in Italy, and he attempted to wipe out the wealth of his political opponents by cancelling debts owed to them.
(7) As dictator, Caesar seemed to lose all touch with reality. He had his face plastered over all the coins (a previously illegal act). He forced Romans to build him a palace, to carry an ivory statue of him at religious ceremonies, to place another statue of him within the great Quirinal temple with the inscription "To the Invincible God," and to place still another statue of him beside the statues of the (deposed) kings of Rome. All the time he did this, he ostentatiously refused to allow anyone to call him King, and he sent out goon-squads to arrest anyone who made the mistake of recognizing that Caesar had robbed all Romans of their liberty.
By the way, if you plagiarize any of this, you'll get an automatic F. Plus, I haven't mentioned a single good thing Caesar did (dying, for example), so good luck finding that on your own.