German sure was heartless Bond baddie (4)
I believe the answer is:
jaws
'bond baddie' is the definition.
(villain in James Bond films)
'german sure was heartless' is the wordplay.
'german sure' becomes 'ja' ('yes' or 'sure!' in German).
'heartless' says to hollow out the word (remove centre letters).
'was' with its middle removed is 'ws'.
'ja'+'ws'='JAWS'
(Other definitions for jaws that I've seen before include "Pair meeting for a snap" , "Gripping part of wrench" , "Bond villain" , "Scary film" , "lectures" .)