Ok you could say he's the only repeat henchman 
You only live twice, Mr. Bond!
"...His physical stature is frequently changing, due to his obsession with changing identities.
In the novels, he was described as once a bodybuilder to which became nothing but fat towards his later years, even though he was still described as a tall, heavy man with a crew cut and dark pool eyes, his appearance changes however in his next two appearances where he lost weight, but his hair has turned long and silvery and has a repaired nose followed by a gold-capped tooth, and then lastly a bushy black moustache. In the films, he is always seen petting a white Persian cat but other physical traits, such as a scar over one eye, have been changed surgically by removal of that to cutting his earlobes, or surgically having gray hair.
Blofeld's tolerance of setback was notoriously short, and he frequently demonstrated displeasure with the failures of subordinates by murdering them, often using misdirection and sometimes using painful and unusual methods to carry out these executions, such as electrocuting a subordinate caught embezzling funds from SPECTRE just before the organization's "Thunderball" operation or collapsing a pathway beneath the feet of operative Helga Brandt so she would fall into a pool and devoured alive by a swarm of pirannha.
Consistently, to what event leads Bond straight to Blofeld or to his organization is usually met with Bond suceeding in disrupting or foiling Blofeld's plan, only for Blofeld to be frustrated after and prove he's hard to kill when confronting Bond. Frequently, escaping fatal situations of one sort or another, only to return and bedevil Bond years later in hopes to even out a settling score between the two of them. With the count of three appearances, plus two mentions in the novels and five film appearances (two of which he played a minor role) followed by an uncredited cameo, Ernst Stavro Blofeld remains to be James Bond's greatest, most dangerous, and pursuing nemesis of all time..."
