H2O: Just Add Water

== Cast members overview ==
: Main character (credited)
: Recurring character (5+ episodes)
: Guest character (1–4 episodes)
: Mentioned character (1+ episodes)
: Unknown character (0 episodes)
Actor 	Character 	Seasons 	Seasons 	Seasons 	Seasons 	Seasons 	Seasons 	
Actor 	Character 	1 	2 	3 	 	 	 	
Main cast 	Main cast 	Main cast 	Main cast 	Main cast 	Main cast 	Main cast 	Main cast 	Main cast
 	Rikki Chadwick 	colspan=3 	 	 	 	 	 	
 	Emma Gilbert 	colspan=2 	colspan=1 	 	 	 	 	
 	Cleo Sertori 	colspan=3 	 	 	 	 	 	
 	Lewis McCartney	colspan=3 	 	 	 	 	 	
 	Bella Hartley 	colspan=2 	colspan=1 	 	 	 	 	
 	Will Benjamin 	colspan=2 	colspan=1 	 	 	 	 	
Recurring cast 	Recurring cast 	Recurring cast	Recurring cast	Recurring cast	Recurring cast	Recurring cast	Recurring cast	Recurring cast
Burgess Abernethy	Zane Bennett 	colspan=3 	 	 	 	 	 	
== H2O: Just Add More Water ==
Actor	Character 	H2O: Just Add Water	H2O: Just Add Water	H2O: Just Add Water	Sequel 	Sequel
Actor	Character 	1 	2 	3 	4 	5
 	Rikki Chadwick 	colspan=5 	 	 	 	
 	Emma Gilbert 	colspan=2 	colspan=1 	colspan=2 	 	
 	Cleo Sertori 	colspan=5 	 	 	 	
 	Lewis McCartney 	colspan=5 	 	 	 	
 	Bella Hartley 	colspan=2 	colspan=3 	 	 	
 	Will Benjamin 	colspan=2 	colspan=1 	colspan=1 	colspan=1	
 	Charlotte Watsford	colspan=1 	colspan=1 	colspan=2 	colspan=1	
*
Category:2000s Australian television series
Category:2010s Australian television series
Category:2006 Australian television series debuts
Category:2010 Australian television series endings
Category:Children's fantasy television series
Category:English-language television programming
Category:Shapeshifting in fiction
Category:Australian fantasy television series
Category:High school television series
Category:Mermaids in television
Category:Teen dramas
Category:Television series about friendship