▁his ▁position ▁as ▁second - in - command , ▁K ro com odo ▁was ▁tempor arily ▁dem oted ▁to ▁third - in - command ▁until ▁Gr im ian ' s ▁ban ishment ▁and ▁event ual ▁execution , ▁thus ▁returning ▁him ▁to ▁second - in - command . ▁His ▁vehicle ▁is ▁R ipt ile . ▁▁ ▁Sever ▁( vo iced ▁by ▁Col in ▁Mur d ock ) ▁- ▁A ▁sh ark - like ▁V andal . ▁Sever ▁has ▁a ▁keen ▁sense ▁of ▁sm ell ▁which ▁allows ▁him ▁to ▁detect ▁life ▁forms ▁from ▁a ▁mile ▁away , ▁similar ▁to ▁K ro com odo ' s . ▁However , ▁he ▁isn ' t ▁very ▁bright , ▁especially ▁since ▁he ▁often ▁thinks ▁about ▁food . ▁So ▁far , ▁he ▁is ▁the ▁only ▁V andal ▁on ▁the ▁team ▁who ▁has ▁not ▁tried ▁to ▁over throw ▁Kal us . ▁In ▁the ▁V andal ▁Ocean , ▁Sever ▁leads ▁a ▁team ▁of ▁sh ark - be ings ▁like ▁himself ▁called ▁the ▁Aqu a - J aws , ▁and ▁can ▁communicate ▁with ▁them ▁using ▁high - p itch ed ▁sc ree ches ▁similar ▁to ▁a ▁wh ale . ▁His ▁vehicle ▁is ▁Water ▁S la ugh ter . ▁▁ ▁H atch ▁( vo iced ▁by ▁Kath le en ▁Bar r ) ▁- ▁A ▁co ck ro ach - like ▁V andal ▁who ▁is ▁arg u ably ▁the ▁most ▁intellectual ▁of ▁the ▁team . ▁It ▁is ▁shown ▁that ▁he ▁is ▁an ▁expert ▁in ▁making ▁cru de ▁electron ics ▁as ▁well ▁as ▁po isons ▁and