Germanicus is have been said to very popular. Also his wife Agrippina. Tiberius was jealous of Germanicus because of his popularity and assumed that the people and the senate would make him emperor of Rome. After that He exiled the whole family the only reason lil Gais (Caligula) and his sisters Agrippina the younger, Drusilla, and Livilla survived all this was youth, Agrippina the elder (Germanicus wife), Drussus and Nero didnt share the same fate. They either died of starvation of commited suicide.