[[WMG: One of These Bros Is Not Like the Other.]]
Look at them. They're polar opposites. Chris is tan, brunette, and brown eyed. Martin is white, blond, and blue eyed. There are 3 theories here:

1)They're not really brothers.
They're cousins, IF they're even related.

2)They're only partly brothers.
One of their parents is different. It's either they have the same mother (half brothers) or same dad (step brothers). Maybe even 3/4 brothers (consult TheOtherWiki for more details.)

3)One of them is adopted.
Sort of ties into number 1, but to a different degree.

Maybe even a mix of them, maybe one of them is an adopted cousin or something of the sort

[[WMG: Aviva is Allison from ''Series/KrattsCreatures''.]]
They look so much alike and do practically the same job. The only difference is that Allison was 15 and we think Aviva's at least 18 (but we don't know this for sure- it's never been directly stated she is, we've all just assumed it).

-They look the same height and weight.

-They have somewhat similar voices.

-They share similar physical features (same skin and hair color).

-They both serve(d) as the researcher and communicator for the Bros.

Although Koki mans the computer, Aviva does most of the talking on it, plus contacting them on their Creature Pods. The main difference between Allison and Aviva (similar names... hmmm...) are their personalities. However, we don't know what Shannon Duff was like outside of being Allison, so that's still up for debate.

However, since the rumor is that Aviva was modeled after someone from Chris' personal life- and we don't know if she was a lover or just a friend- given that [[UnfortunateImplications Shannon was 15]] in RealLife when Chris was 25... (But come on. If that's true, he waited the other 3 years. Chris isn't a scumbag!)

* [[Tropers/TitoMosquito This troper]] thought the same thing, even though he never seen ''Kratts' Creatures''.

[[WMG: Extention of previous]]
If Aviva is Allison, then Koki could potentially be [[DeadpanSnarker Ttark]], and maybe Jimmy even ''{{Zoboomafoo}}''. Koki and Ttark share a lot of qualities as well- Ttark was in the computer, Koki is on it. They're both snarkers UpToEleven as well. Jimmy makes similar, but not the exact same, mistakes Zoboo would make.

[[WMG: Gourmand "LIKE" Likes Chris.]]
Gourmand is always chasing Chris. Gourmand has made remarks about eating Chris, in "Platypus Cafe" and "Raptor Round-Up".
-> Chris: *in the Peregrine suit* These wings were made for flying!
-> Gourmand: [[NauseaFuel Frying!]]
-> Chris: Flying!
-> Gourmand: *slowly and insistently* Fryyyiiing...
Later...
-> Gourmand: *chasing Chris in the air* Here, [[RuleOfThree birdy birdy birdy!]]
"Raptor Round-Up"

[[StalkerWithoutACrush Stalkers]] often [[AxCrazy kill]] the ones they [[StalkerWithACrush love]] so that [[IfICantHaveYou no one else can have them]]...

[[WMG: The time machine mentioned in "Raptor Roundup" is {{foreshadowing}}.]]
* Confirmed in "Back in Creature Time" 2-parter.