Season 4 aired between 14 Jun 2003 and 25 Sep 2004, 13 episodes.
Episodes
E01
XL
14 Jun 2003
E02
XLI - Robo/Mondo - Bot
21 Jun 2003
E03
XLII
28 Jun 2003
E04
Birth of Evil
16 Aug 2003
E05
Scotsman Saves Jack
23 Aug 2003
E06
XLIII
05 Nov 2003
E07
XLIV
12 Nov 2003
E08
XLVII
19 Nov 2003
E09
XLVIII
24 Nov 2003
E10
XLIX
25 Sep 2004
E11
L
25 Sep 2004
E12
LI
25 Sep 2004
E13
LII
25 Sep 2004